Document and Entity Information - shares |
9 Months Ended | |
|---|---|---|
Sep. 30, 2018 |
Oct. 31, 2018 |
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| Document Information [Line Items] | ||
| Entity Registrant Name | Dropbox, Inc. | |
| Entity Central Index Key | 0001467623 | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Filer Category | Non-accelerated Filer | |
| Document Type | 10-Q | |
| Document Period End Date | Sep. 30, 2018 | |
| Document Fiscal Year Focus | 2018 | |
| Document Fiscal Period Focus | Q3 | |
| Amendment Flag | false | |
| Class A common stock | ||
| Document Information [Line Items] | ||
| Entity Common Stock, Shares Outstanding | 167,969,877 | |
| Class B common stock | ||
| Document Information [Line Items] | ||
| Entity Common Stock, Shares Outstanding | 238,553,683 | |
| Class C common stock | ||
| Document Information [Line Items] | ||
| Entity Common Stock, Shares Outstanding | 0 |
| X | ||||||||||
- Definition If the value is true, then the document is an amendment to previously-filed/accepted document. No definition available.
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- Definition End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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- Definition This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other". No definition available.
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- Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. No definition available.
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- Definition Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Condensed Consolidated Balance Sheets - USD ($) |
Sep. 30, 2018 |
Dec. 31, 2017 |
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|---|---|---|---|---|---|
| Current assets: | |||||
| Cash and cash equivalents | $ 536,200,000 | $ 430,000,000 | |||
| Short-term investments | 502,900,000 | 0 | |||
| Trade and other receivables, net | 28,600,000 | 29,300,000 | |||
| Prepaid expenses and other current assets | 96,000,000 | 58,800,000 | |||
| Total current assets | 1,163,700,000 | 518,100,000 | |||
| Property and equipment, net | 295,900,000 | 341,900,000 | |||
| Intangible assets, net | 15,200,000 | 17,000,000 | |||
| Goodwill | 98,000,000 | 98,900,000 | |||
| Other assets | 50,300,000 | 44,000,000 | |||
| Total assets | 1,623,100,000 | 1,019,900,000 | |||
| Current liabilities: | |||||
| Accounts payable | 27,900,000 | 31,900,000 | |||
| Accrued and other current liabilities | 163,200,000 | 129,800,000 | |||
| Accrued compensation and benefits | 64,200,000 | 56,100,000 | |||
| Capital lease obligation | [1] | 80,500,000 | 102,700,000 | ||
| Deferred revenue | 479,300,000 | 417,900,000 | |||
| Total current liabilities | 815,100,000 | 738,400,000 | |||
| Capital lease obligation, non-current | [1] | 82,400,000 | 71,600,000 | ||
| Deferred rent, non-current | 73,400,000 | 69,800,000 | |||
| Other non-current liabilities | 8,800,000 | 37,200,000 | |||
| Total liabilities | 979,700,000 | 917,000,000 | |||
| Commitments and contingencies (Note 7) | |||||
| Stockholders’ equity: | |||||
| Preferred stock | 0 | 0 | |||
| Common stock | 0 | 0 | |||
| Additional paid-in capital | 2,285,000,000 | 533,100,000 | |||
| Accumulated deficit | (1,643,500,000) | (1,049,700,000) | |||
| Accumulated other comprehensive income | 1,900,000 | 4,200,000 | |||
| Total stockholders’ equity | 643,400,000 | 102,900,000 | |||
| Total liabilities and stockholders’ equity | 1,623,100,000 | 1,019,900,000 | |||
| Convertible preferred stock | |||||
| Stockholders’ equity: | |||||
| Preferred stock | $ 0 | $ 615,300,000 | |||
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- Definition Accrued Liabilities and Other Liabilities, Current No definition available.
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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of investments in debt securities classified as available-for-sale, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions |
3 Months Ended | 9 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
||||||
| Income Statement [Abstract] | |||||||||
| Revenue | $ 360.3 | $ 286.7 | $ 1,015.8 | $ 801.3 | |||||
| Cost of revenue | [1] | 90.2 | 91.5 | 300.3 | 277.2 | ||||
| Gross profit | 270.1 | 195.2 | 715.5 | 524.1 | |||||
| Operating expenses | |||||||||
| Research and development | [1] | 133.2 | 97.2 | 631.4 | 276.3 | ||||
| Sales and marketing | [1] | 95.0 | 74.7 | 339.4 | 211.1 | ||||
| General and administrative | [1],[2] | 50.8 | 39.6 | 226.7 | 113.1 | ||||
| Total operating expenses | [1] | 279.0 | 211.5 | 1,197.5 | 600.5 | ||||
| Loss from operations | (8.9) | (16.3) | (482.0) | (76.4) | |||||
| Interest income (expense), net | 2.4 | (2.2) | 3.2 | (9.4) | |||||
| Other income, net | 0.5 | 4.9 | 6.1 | 13.0 | |||||
| Loss before income taxes | (6.0) | (13.6) | (472.7) | (72.8) | |||||
| Benefit from (provision for) income taxes | 0.2 | (0.5) | (2.7) | (1.2) | |||||
| Net loss | $ (5.8) | $ (14.1) | $ (475.4) | $ (74.0) | |||||
| Net loss per share attributable to common stockholders, basic and diluted (in dollars per share) | $ (0.01) | $ (0.07) | $ (1.39) | $ (0.38) | |||||
| Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted (in shares) | 403.9 | 197.2 | 342.0 | 195.5 | |||||
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The net amount of nonoperating interest income (expense). No definition available.
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate total amount of expenses directly related to the marketing or selling of products or services. No definition available.
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| X | ||||||||||
- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
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| Donation of common stock to charitable foundation | $ 0.0 | $ 9.4 | |||||
| Cash contributions to charitable foundation | [1] | $ 0.4 | 0.8 | ||||
| Cost of revenue | |||||||
| Allocated share-based compensation expense | $ 3.2 | 2.9 | 43.9 | 9.3 | |||
| Research and development | |||||||
| Allocated share-based compensation expense | 28.2 | 22.9 | 339.0 | 66.4 | |||
| Sales and marketing | |||||||
| Allocated share-based compensation expense | 8.1 | 7.5 | 88.4 | 22.9 | |||
| General and administrative | |||||||
| Allocated share-based compensation expense | $ 15.5 | $ 6.4 | $ 125.3 | 18.6 | |||
| Donation of common stock to charitable foundation | [1] | $ 9.4 | |||||
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- Definition Cash Contributions To Charitable Foundation No definition available.
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| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Noncash charitable contributions made by the entity during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
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| Statement of Comprehensive Income [Abstract] | ||||
| Net loss | $ (5.8) | $ (14.1) | $ (475.4) | $ (74.0) |
| Other comprehensive income (loss), net of tax: | ||||
| Change in foreign currency translation adjustments | (0.1) | 1.7 | (2.1) | 5.3 |
| Change in net unrealized losses on short-term investments | 0.0 | 0.0 | (0.2) | 0.0 |
| Total other comprehensive income (loss), net of tax | (0.1) | 1.7 | (2.3) | 5.3 |
| Comprehensive loss | $ (5.9) | $ (12.4) | $ (477.7) | $ (68.7) |
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- References No definition available.
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- Definition Deprecation, Depletion And Amortization (Excluding Amortization Of Deferred Sales Commissions No definition available.
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| X | ||||||||||
- Definition Increase (Decrease) In Accrued Liabilities and Other Liabilities No definition available.
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| X | ||||||||||
- Definition Proceeds From Equipment Rebates No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of expense recognized in the current period for the periodic realization of capitalized fees that were paid to salespeople, distributors, brokers, and agents at the time of the conclusion of the sale. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase during the period in capital lease obligations due to entering into new capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting revenue yet to be earned for which cash or other forms of consideration was received or recorded as a receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of increase (decrease) in noncurrent operating liabilities classified as other. No definition available.
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- Definition Amount of increase (decrease) in operating assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) in prepaid expenses, and assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Noncash charitable contributions made by the entity during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash outflow to acquire debt securities classified as available-for-sale securities, because they are not classified as either held-to-maturity securities or trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow from maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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Description of the Business and Summary of Significant Accounting Policies |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Description of the Business and Summary of Significant Accounting Policies | Description of the Business and Summary of Significant Accounting Policies Business Dropbox, Inc. (the “Company” or “Dropbox”) is a global collaboration platform. Dropbox was incorporated in May 2007 as Evenflow, Inc., a Delaware corporation, and changed its name to Dropbox, Inc. in October 2009. The Company is headquartered in San Francisco, California. Basis of presentation and consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the United States of America generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission ("SEC") regarding interim financial reporting. The accompanying unaudited condensed consolidated financial statements include the accounts of Dropbox and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated balance sheet as of December 31, 2017 included herein was derived from the audited financial statements as of that date. The unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the balance sheets, statements of operations, statements of comprehensive loss and the statements of cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year ended December 31, 2018 or any future period. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended December 31, 2017, included in the Company's prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended, on March 23, 2018, referred to as the Prospectus. Initial public offering and private placement On March 27, 2018, the Company closed its initial public offering ("IPO"), in which the Company issued and sold 26,822,409 shares of Class A common stock at $21.00 per share. The Company received aggregate proceeds of $538.2 million, net of underwriters' discounts and commissions, before deducting offering costs of $6.9 million, net of reimbursements. Immediately prior to the closing of the Company’s IPO, 147,310,563 shares of convertible preferred stock outstanding converted into an equivalent number of shares of Class B common stock. Further, pursuant to transfer agreements with certain of the Company’s stockholders, 258,620 shares of the Company’s convertible preferred stock and 2,609,951 shares of the Company’s Class B common stock automatically converted into an equivalent number of shares of Class A common stock. Immediately subsequent to the closing of the Company's IPO, Salesforce Ventures LLC purchased 4,761,905 shares of Class A common stock from the Company at $21.00 per share. The Company received aggregate proceeds of $100.0 million and did not pay any underwriting discounts or commissions with respect to the shares that were sold in the private placement. On March 28, 2018, the underwriters exercised their option to purchase an additional 5,400,000 shares of the Company's Class A common stock at $21.00 per share. This transaction closed on April 3, 2018, resulting in additional proceeds of $108.4 million, net of underwriters' discounts and commissions. The Company’s net proceeds from the IPO, the concurrent private placement, and underwriters' option totaled $746.6 million, before deducting offering costs of $6.9 million, net of reimbursements. Upon the effectiveness of the registration statement for the Company's IPO, which was March 22, 2018, the liquidity event-related performance vesting condition, referred to as the Performance Vesting Condition, associated with the Company's two-tier RSUs was satisfied. As a result, the Company recognized the cumulative unrecognized stock-based compensation related to its two-tier restricted stock units ("RSUs") using the accelerated attribution method of $418.7 million attributable to service prior to such effective date. As of September 30, 2018, the remaining unamortized stock-based compensation related to the two-tier RSUs was $0.4 million, which will be recognized if the requisite service is provided over a weighted average period of 0.3 years. During the first quarter of 2018, the Company's Board of Directors approved the acceleration of the Performance Vesting Condition for which the service condition was satisfied, to occur upon the effectiveness of the registration statement for the Company's IPO, rather than six months following an IPO. As a result, the Company released 26.8 million shares of common stock underlying the two-tier RSUs for which the Performance Vesting Condition was satisfied, and recorded $13.9 million in employer related payroll tax expenses associated with these same awards. See “—Stock-based compensation” for further discussion regarding the Company's two-tier RSUs. Stock split On March 7, 2018, the Company effected a 1-for-1.5 reverse stock split of its capital stock. All of the share and per share information referenced throughout the condensed consolidated financial statements and notes to the condensed consolidated financial statements have been retroactively adjusted to reflect this reverse stock split. Use of estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the Company’s condensed consolidated financial statements and accompanying notes. These estimates are based on information available as of the date of the condensed consolidated financial statements. Management evaluates these estimates and assumptions on a regular basis. Actual results may differ materially from these estimates. The Company’s most significant estimates and judgments involve recognition of revenue, the measurement of the Company’s stock-based compensation, including the estimation of the underlying deemed fair value of common stock in periods prior to the date of the Company's IPO, the estimation of the fair value of market-based awards, and the valuation of acquired intangible assets and goodwill from business combinations. Financial information about segments and geographic areas The Company manages its operations and allocates resources as a single operating segment. Further, the Company manages, monitors, and reports its financials as a single reporting segment. The Company’s chief operating decision-maker is its Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources. See Note 13, "Geographic Areas" for information regarding the Company’s long-lived assets and revenue by geography. Foreign currency transactions The assets and liabilities of the Company’s foreign subsidiaries are translated from their respective functional currencies into U.S. dollars at the exchange rates in effect at the balance sheet date. Revenue and expense amounts are translated at the average exchange rate for the period. Foreign currency translation gains and losses are recorded in other comprehensive income (loss). Gains and losses realized from foreign currency transactions (those transactions denominated in currencies other than the foreign subsidiaries’ functional currency) are included in other income (expense), net. Monetary assets and liabilities are remeasured using foreign currency exchange rates at the end of the period, and non-monetary assets are remeasured based on historical exchange rates. The Company recorded net foreign currency transaction losses of $1.0 million and $1.4 million during the three and nine months ended September 30, 2018, respectively, and net foreign currency transaction gains of $2.9 million and $6.9 million during the three and nine months ended September 30, 2017, respectively. Revenue recognition The Company derives its revenue from subscription fees from customers for access to its platform. The Company’s policy is to exclude sales and other indirect taxes when measuring the transaction price of its subscription agreements. The Company accounts for revenue contracts with customers through the following steps:
The Company’s subscription agreements generally have monthly or annual contractual terms and a small percentage have multi-year contractual terms. Revenue is recognized ratably over the related contractual term beginning on the date that the platform is made available to a customer. Access to the platform represents a series of distinct services as the Company continually provides access to, and fulfills its obligation to the end customer over the subscription term. The series of distinct services represents a single performance obligation that is satisfied over time. The Company recognizes revenue ratably because the customer receives and consumes the benefits of the platform throughout the contract period. The Company’s contracts are generally non-cancelable. The Company bills in advance for monthly contracts and typically bills annually in advance for contracts with terms of one year or longer. The Company also recognizes an immaterial amount of contract assets, or unbilled receivables, primarily relating to consideration for services completed but not billed at the reporting date. Unbilled receivables are classified as receivables when the Company has the right to invoice the customer. The Company records contract liabilities when cash payments are received or due in advance of performance to deferred revenue. Deferred revenue primarily relates to the advance consideration received from the customer. The price of subscriptions is generally fixed at contract inception and therefore, the Company’s contracts do not contain a significant amount of variable consideration. As a result, the amount of revenue recognized in the periods presented from performance obligations satisfied (or partially satisfied) in previous periods was not material. The Company recognized $213.2 million and $390.1 million of revenue during the three and nine months ended September 30, 2018, respectively, and recognized $178.0 million and $324.6 million of revenue during the three and nine months ended September 30, 2017, respectively, that was included in the deferred revenue balances at the beginning of their respective periods. As of September 30, 2018, future estimated revenue related to performance obligations that were unsatisfied or partially unsatisfied was $523.3 million. The substantial majority of the unsatisfied performance obligations will be satisfied over the next twelve months. Stock-based compensation The Company has granted RSUs to its employees and members of the Board of Directors under the 2008 Equity Incentive Plan (“2008 Plan”), the 2017 Equity Incentive Plan (“2017 Plan”), and the 2018 Equity Incentive Plan ("2018 Plan"). The Company had two types of RSUs outstanding as of September 30, 2018:
The Performance Vesting Condition for the two-tier RSUs was satisfied upon the effectiveness of the registration statement related to the Company's IPO, which was March 22, 2018. On that date, the Company recognized the cumulative unrecognized expense of the two-tier RSUs, using the accelerated attribution method, which is included in the Company's results for the nine months ended September 30, 2018. See "—Initial public offering and private placement” for further discussion. As of September 30, 2018, the remaining unamortized stock-based compensation related to the two-tier RSUs was $0.4 million, which will be recognized if the requisite service is provided over a weighted average period of 0.3 years. Since August 2015, the Company has granted RSUs as the only stock-based payment awards to its employees, with the exception of awards granted to its co-founders, and has not granted any stock options since then. The fair values of the common stock underlying the RSUs granted in periods prior to the date of the Company's IPO were determined by the Board of Directors, with input from management and contemporaneous third-party valuations, which were performed at least quarterly. For valuations after the Company's IPO, the Board of Directors will determine the fair value of each share of underlying common stock based on the closing price of the Company's Class A common stock as reported on the Nasdaq Global Select Market on the date of the grant. In December 2017, the Board of Directors approved a grant to the Company’s co-founders of restricted stock awards (“RSAs”) with respect to 14.7 million shares of Class A Common Stock in the aggregate (collectively, the “Co-Founder Grants”), of which 10.3 million RSAs were granted to Mr. Houston, the Company’s co-founder and Chief Executive Officer, and 4.4 million RSAs were granted to Mr. Ferdowsi, the Company’s co-founder and Director. These Co-Founder Grants have service-based, market-based, and performance-based vesting conditions. The Co-Founder Grants comprise nine tranches that are eligible to vest based on the achievement of stock price goals, or, each, a Stock Price Target. The Company estimated the grant date fair value of the Co-Founder Grants using a model based on multiple stock price paths developed through the use of a Monte Carlo simulation that incorporates into the valuation the possibility that the Stock Price Targets may not be satisfied. The average grant date fair value of each Co-Founder Grant was estimated to be $10.60 per share, and the Company will recognize aggregate stock-based compensation expense of $156.2 million over the requisite service period of each tranche, which ranged from 2.9 to 6.9 years, using the accelerated attribution method. If the Stock Price Targets are met sooner than the derived service period, the Company will adjust its stock-based compensation to reflect the cumulative expense associated with the vested awards. The Company will recognize expense if the requisite service is provided, regardless of whether the market conditions are achieved. The Co-Founder Grants contain an implied performance-based vesting condition because the Stock Price Targets are based on the trailing 30-day average price of the shares from an established national securities exchange or automated quotation system. Accordingly, no vesting could occur until the completion of the Company’s IPO. The relevant performance-based vesting condition for the Co-Founder Grants was satisfied on the date the Company’s shares of Class A common stock commenced trading on the Nasdaq Global Select Market, in connection with the Company’s IPO, which was March 23, 2018. The Company recognized $8.8 million and $28.1 million in stock-based compensation related to the Co-Founder Grants during the three and nine months ended September 30, 2018, respectively. Cash and cash equivalents Cash consists primarily of cash on deposit with banks and includes amounts in transit from payment processors for credit and debit card transactions, which typically settle within five business days. Cash equivalents include highly liquid investments purchased with an original maturity date of 90 days or less from the date of purchase. Short-term investments The Company’s short-term investments are primarily comprised of corporate notes and obligations, U.S. treasury securities, certificates of deposits, U.S. agency obligations, and commercial paper. The Company determines the appropriate classification of its short-term investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its short-term investments as available-for-sale securities as the Company may sell these securities at any time for use in its current operations or for other purposes, even prior to maturity. As a result, the Company classifies its short-term investments, including securities with stated maturities beyond twelve months, within current assets in the condensed consolidated balance sheets. The Company's short-term investments are classified as available-for-sale securities and are recorded at fair value each reporting period. Unrealized gains and losses on these short-term investments are reported as a separate component of accumulated other comprehensive income (loss) in the condensed consolidated balance sheets until realized. Interest income is reported within interest income (expense), net in the condensed consolidated statements of operations. The Company periodically evaluates its short-term investments to assess whether those with unrealized loss positions are other-than-temporarily impaired. The Company considers various factors in determining whether to recognize an impairment charge, including the length of time the investment has been in a loss position, the extent to which the fair value is less than the Company’s cost basis, and the financial condition and near-term prospects of the investee. Realized gains and losses are determined based on the specific identification method and are reported in other income (expense), net in the condensed consolidated statements of operations. If the Company determines that the decline in an investment’s fair value is other-than-temporary, the difference is recognized as an impairment loss in the condensed consolidated statements of operations. Concentrations of credit risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, accounts receivable, and short-term investments. The Company places its cash and cash equivalents and short-term investments with well-established financial institutions. Trade accounts receivables are typically unsecured and are derived from revenue earned from customers located around the world. Two customers accounted for 13% and 40% of total trade and other receivables, net as of September 30, 2018. Two customers accounted for 18% and 27% of total trade and other receivables, net as of December 31, 2017. No customer accounted for more than 10% of the Company’s revenue in the periods presented. Non-trade receivables The Company records non-trade receivables to reflect amounts due for activities outside of its subscription agreements. Historically, the Company’s non-trade receivables have related primarily to receivables resulting from tenant improvement allowances. Non-trade receivables totaled $44.8 million and $5.2 million, as of September 30, 2018 and December 31, 2017, respectively, and are classified within prepaid expenses and other current assets and other assets in the accompanying condensed consolidated balance sheets. The Company recognized its initial tenant improvement allowance receivable related to its new corporate headquarters once it took initial possession of the first phase in June 2018. As of September 30, 2018, $40.5 million is included in prepaid expenses and other current assets related to this tenant improvement allowance receivable. See "—Lease obligations” for further discussion on the corresponding recording of the lease incentive obligation. Deferred commissions, net Deferred commissions, net is stated as gross deferred commissions less accumulated amortization. Sales commissions earned by the Company’s sales force and third-party resellers, as well as related payroll taxes, are considered to be incremental and recoverable costs of obtaining a contract with a customer. These amounts have been capitalized as deferred commissions within prepaid and other current assets and other assets on the condensed consolidated balance sheets. The Company deferred incremental costs of obtaining a contract of $7.4 million and $24.9 million during the three and nine months ended September 30, 2018, respectively, and $6.3 million and $16.0 million during the three and nine months ended September 30, 2017, respectively. Deferred commissions, net included in prepaid and other current assets were $13.0 million and $8.1 million as of September 30, 2018 and December 31, 2017, respectively. Deferred commissions, net included in other assets were $36.3 million and $24.8 million as of September 30, 2018 and December 31, 2017, respectively. Deferred commissions are amortized over a period of benefit of five years. The period of benefit was estimated by considering factors such as historical customer attrition rates, the useful life of the Company’s technology, and the impact of competition in its industry. Amortized costs were $3.2 million and $8.5 million for the three and nine months ended September 30, 2018, respectively, and $2.0 million and $4.6 million for the three and nine months ended September 30, 2017, respectively. Amortized costs are included in sales and marketing expense in the accompanying condensed consolidated statements of operations. There was no impairment loss in relation to the deferred costs for any period presented. Property and equipment, net Equipment is stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful life of the related asset, which is generally three to seven years. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the term of the related lease. In the first quarter of 2018, the Company determined that the useful lives of certain infrastructure equipment, which are depreciated through cost of revenue, should be increased from three to four years. The Company accounted for this as a change in estimate that was applied prospectively, effective as of January 1, 2018. This change in useful life resulted in a reduction in depreciation expense within cost of revenue of $2.8 million and $13.6 million during the three and nine months ended September 30, 2018, respectively. The following table presents the estimated useful lives of property and equipment:
Lease obligations The Company leases office space, datacenters, and equipment under non-cancelable capital and operating leases with various expiration dates through 2033. Certain of the Company’s operating lease agreements contain tenant improvement allowances from its landlords. These allowances are accounted for as lease incentive obligations and are amortized as reductions to rent expense over the lease term. In June 2018, the Company took initial possession of the first phase of its new corporate headquarters and recorded a lease incentive obligation related to this phase. As of September 30, 2018, $2.6 million was included in accrued and other current liabilities and $37.0 million was included in deferred rent, non-current in the Company's condensed consolidated balance sheets. In addition, certain of the operating lease agreements contain rent concession, rent escalation, and option to renew provisions. Rent concession and rent escalation provisions are considered in determining the straight-line rent expense to be recorded over the lease term. Lease expense is recognized on a straight-line basis over the lease term commencing on the date the Company has the right to use the leased property. The Company does not assume renewals in its determination of the lease term unless the renewals are deemed to be reasonably assured at lease inception. In 2012, the Company undertook a series of structural improvements to the floor that it occupied in its previous corporate headquarters. As a result of the requirement to fund construction costs and its responsibility for cost overruns during the construction period, the Company was considered the deemed owner of the floor for accounting purposes. Due to the presence of a standby letter of credit as a security deposit, the Company was deemed to have continuing involvement after the construction period. As such, it accounted for this arrangement as owned real estate and recorded a building asset and an imputed financing obligation for its liability to the legal owners. In September 2018, the Company terminated its master lease for its previous corporate headquarters, the impact of which is described in Note 4, "Property and Equipment, Net". The Company leases certain equipment from various third parties, including from a related party, through equipment financing leases under capital leases. See Note 12, “Related Party Transactions” for additional details. These leases either include a bargain purchase option, a full transfer of ownership at the completion of the lease term, or the terms of the leases are at least 75 percent of the useful lives of the assets and are therefore classified as capital leases. These leases are capitalized in property and equipment and the related amortization of assets under capital leases is included in depreciation and amortization expense in the Company’s condensed consolidated statements of operations. Initial asset values and lease obligations are based on the present value of future minimum lease payments. Long-lived assets, including goodwill and other acquired intangible assets, net The Company evaluates the recoverability of its property and equipment and finite-lived intangible assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. The evaluation is performed at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Recoverability of these assets is measured by a comparison of the carrying amounts to the future undiscounted cash flows the assets are expected to generate. If such review determines that the carrying amount of specific property and equipment or intangible assets is not recoverable, the carrying amount of such assets is reduced to its fair value. The Company reviews goodwill for impairment at least annually in the fourth quarter, or more frequently if events or changes in circumstances would more likely than not reduce the fair value of its single reporting unit below its carrying value. The Company has not recorded impairment charges on property and equipment, goodwill, or intangible assets for the periods presented in these condensed consolidated financial statements. Acquired property and equipment and finite-lived intangible assets are amortized over their useful lives. The Company evaluates the estimated remaining useful life of these assets when events or changes in circumstances warrant a revision to the remaining period of amortization. If the Company revises the estimated useful life assumption for any asset, the remaining unamortized balance is amortized or depreciated over the revised estimated useful life on a prospective basis. See "—Property and equipment, net” for further discussion regarding a change in useful life applied during the nine months ended September 30, 2018. Income taxes Deferred income tax balances reflect the effects of temporary differences between the financial reporting and tax bases of the Company’s assets and liabilities using enacted tax rates expected to apply when taxes are actually paid or recovered. In addition, deferred tax assets are recorded for net operating loss and credit carryforwards. A valuation allowance is provided against deferred tax assets unless it is more likely than not that they will be realized based on all available positive and negative evidence. Such evidence includes, but is not limited to, recent cumulative earnings or losses, expectations of future taxable income by taxing jurisdiction, and the carry-forward periods available for the utilization of deferred tax assets. The Company uses a two-step approach to recognizing and measuring uncertain income tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. The Company recognizes interest and penalties related to unrecognized tax benefits as income tax expense. Although the Company believes that it has adequately reserved for its uncertain tax positions, it can provide no assurance that the final tax outcome of these matters will not be materially different. The Company evaluates its uncertain tax positions on a regular basis and evaluations are based on a number of factors, including changes in facts and circumstances, changes in tax law, such as the 2017 Tax Cuts and Jobs Act ("2017 Tax Reform Act"), correspondence with tax authorities during the course of an audit, and effective settlement of audit issues. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on the Company’s financial condition and results of operations. Fair value measurement The Company applies fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining fair value measurements for assets and liabilities, the Company considers the principal or most advantageous market in which it would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as risks inherent in valuation techniques, transfer restrictions, and credit risk. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1—Quoted prices in active markets for identical assets or liabilities. Level 2—Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3—Inputs that are generally unobservable and typically reflect management’s estimate of assumptions that market participants would use in pricing the asset or liability. Recently issued accounting pronouncements not yet adopted In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842). Most prominent among the changes in the standard is the recognition of right of use assets and lease liabilities by lessees for those leases classified as operating leases under current GAAP. Under the standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Company is required to adopt the standard using the modified retrospective approach and has elected to use the optional transition method related to comparative reporting at adoption. The new standard is effective for fiscal years beginning after December 15, 2018. Early adoption by public entities is permitted. The Company is in the process of finalizing changes to its systems, processes, disclosures and controls in order to adopt the new standard on January 1, 2019. The Company anticipates the adoption of this standard will result in a substantial increase in its non-current assets and liabilities recorded on the condensed consolidated balance sheets. The adoption of the standard is not expected to have a material impact on the consolidated statement of operations. While the Company is assessing all potential impacts of the adoption of the standard, it currently expects the most significant impact to be the capitalization of right-of-use assets and lease liabilities for its office space and datacenter operating leases. The Company expects its accounting for capital leases related to infrastructure equipment to remain substantially unchanged under the new standard. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU No. 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Reform Act. The amendments in ASU No. 2018-02 also require certain disclosures about stranded tax effects. The guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption in any period is permitted. The Company is currently evaluating the impact and timing of adopting ASU No. 2018-02. In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting. Under existing U.S. GAAP, the measurement date for equity awards granted to nonemployees is the earlier of the performance commitment date or the date the performance is complete. The amendments in ASU No. 2018-07 allow for measurement of these awards on the grant date, consistent with equity awards granted to employees. The guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption in any period is permitted. The Company does not expect the impact of adoption to have a material impact on its condensed consolidated financial statements and is currently evaluating the timing of adopting ASU No. 2018-07. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820), which amends disclosure requirements for fair value measurements by requiring new disclosures, modifying existing requirements, and eliminating others. The amendments are the result of a broader disclosure project, which aims to improve the effectiveness of disclosures. ASU No. 2018-13 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption to have a significant impact on its disclosures and is currently evaluating the timing of adopting ASU No. 2018-13. In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. Under existing U.S. GAAP, there is diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. The amendments in ASU No. 2018-15 amend the definition of a hosting arrangement and requires a customer in a hosting arrangement that is a service contract to capitalize certain costs as if the arrangement were an internal-use software project. The guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact and timing of adopting ASU No. 2018-15. Recently adopted accounting pronouncements In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (Subtopic 825), which primarily affects the accounting for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. In addition, the FASB clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The accounting for other financial instruments, such as loans, investments in debt securities and financial liabilities is largely unchanged. The Company adopted ASU No. 2016-01 on January 1, 2018. The adoption of the standard did not have a material impact on the Company's condensed consolidated financial statements. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes: Intra-Entity Transfers Other than Inventory (Topic 740), which requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The Company adopted ASU No. 2016-16 on January 1, 2018. The adoption of the guidance did not have a material impact on the Company's condensed consolidated financial statements. |
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Cash, Cash Equivalents and Short-Term Investments |
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| Cash and Cash Equivalents [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash, Cash Equivalents and Short-Term Investments | Cash, Cash Equivalents and Short-Term Investments The amortized cost, unrealized gains and losses and estimated fair value of the Company's cash, cash equivalents and short-term investments as of September 30, 2018 consisted of the following:
The Company's cash and cash equivalents at December 31, 2017 consisted of cash of $62.9 million and money market funds of $367.1 million. The Company did not have short-term investments as of December 31, 2017. Included in cash and cash equivalents is cash in transit from payment processors for credit and debit card transactions of $17.5 million and $13.3 million as of September 30, 2018 and December 31, 2017, respectively. All short-term investments were designated as available-for-sale securities as of September 30, 2018. The Company had 143 short-term investments in unrealized loss positions as of September 30, 2018. There were no material gross unrealized losses from available-for-sale securities and no material realized gains or losses from available-for-sale securities that were reclassified out of accumulated other comprehensive income for the three and nine months ended September 30, 2018. For investments in available-for-sale debt securities that have unrealized losses, the Company evaluates whether (i) it has the intention to sell any of these investments and (ii) whether it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. Based on this evaluation, the Company determined that there were no other-than-temporary impairments associated with short-term investments as of September 30, 2018. The following table presents the contractual maturities of the Company’s short-term investments as of September 30, 2018:
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair Value Measurements |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Measurements | Fair Value Measurements The Company measures its financial instruments at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following table presents information about the Company’s financial instruments that are measured at fair value on a recurring basis using the input categories discussed in Note 1:
The total cash equivalents held by the Company as of December 31, 2017 were $367.1 million and were entirely comprised of money market funds classified within Level 1 of the fair value hierarchy. The Company had no transfers between levels of the fair value hierarchy. The carrying amounts of certain financial instruments, including cash held in banks, accounts receivable and accounts payable approximate fair value due to their short-term maturities and are excluded from the fair value table above. |
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Property and Equipment, Net |
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| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property and Equipment, Net | Property and Equipment, Net Property and equipment, net consisted of the following:
As described in Note 1, "Description of the Business and Summary of Significant Accounting Policies", the Company terminated its master lease for its previous corporate headquarters in September 2018. The termination resulted in de-recognizing the gross building asset of $36.6 million, related accumulated depreciation of $12.2 million, and an imputed financing obligation of $25.5 million, of which $2.8 million was included in accrued and other current liabilities and $22.7 million was included in other non-current liabilities. The Company recorded the difference between the net asset and liability that were de-recognized to other income (expense), net during the period. The Company leases certain infrastructure from various third parties, including from a related party, through equipment financing leases that are accounted for as capital leases. See Note 12, “Related Party Transactions” for additional details. Infrastructure assets as of September 30, 2018 and December 31, 2017, respectively included a total of $368.3 million and $417.9 million acquired under capital lease agreements. These leases are capitalized in property and equipment, and the related amortization of assets under capital leases is included in depreciation and amortization expense. The accumulated depreciation of the infrastructure under capital leases totaled $219.1 million and $259.0 million as of September 30, 2018 and December 31, 2017, respectively. Construction in process includes costs primarily related to construction of leasehold improvements for office buildings and datacenters. Depreciation expense related to property and equipment was $43.3 million and $115.4 million for the three and nine months ended September 30, 2018, respectively, and $42.0 million and $130.1 million for the three and nine months ended September 30, 2017, respectively. |
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Goodwill |
9 Months Ended |
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Sep. 30, 2018 | |
| Goodwill and Intangible Assets Disclosure [Abstract] | |
| Goodwill | Goodwill Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Goodwill amounts are not amortized, but tested for impairment on an annual basis. There was no impairment of goodwill as of September 30, 2018 and December 31, 2017. The Company did not complete any business combinations in any of the periods presented. |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Accrued and Other Current Liabilities |
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| Payables and Accruals [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accrued and Other Current Liabilities | Accrued and Other Current Liabilities Accrued and other current liabilities consisted of the following:
Deferred rent as of September 30, 2018 increased from December 31, 2017 primarily due to the amendment of the lease for the Company's current corporate headquarters and the shortening of its lease term in May 2018, as described further in Note 7, "Commitments and Contingencies". This lease modification resulted in a reclassification of deferred rent from deferred rent, non-current to accrued and other current liabilities, and is included in the deferred rent amount in the table above. |
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- Definition Accrued Liabilities And Other Liabilities, Current No definition available.
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| X | ||||||||||
- References No definition available.
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Revolving Credit Facility |
9 Months Ended |
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Sep. 30, 2018 | |
| Debt Disclosure [Abstract] | |
| Revolving Credit Facility | Revolving Credit Facility In April 2017, the Company entered into an amended and restated credit and guaranty agreement which provided for a $600.0 million revolving loan facility (the “revolving credit facility”). In conjunction with the revolving credit facility, the Company paid upfront issuance fees of $2.6 million, which are being amortized over the five-year term of the agreement. In February 2018, the Company amended its revolving credit facility to, among other things, permit the Company to make certain investments, enter into an unsecured standby letter of credit facility and increase its standby letter of credit sublimit to $187.5 million. The Company increased its borrowing capacity under the revolving credit facility from $600.0 million to $725.0 million. The Company may from time to time request increases in its borrowing capacity under the revolving credit facility of up to $275.0 million, provided no event of default has occurred or is continuing or would result from such increase. In conjunction with the amendment, the Company paid upfront issuance fees of $0.4 million, which are being amortized over the remaining term of the agreement. Pursuant to the terms of the revolving credit facility, the Company may issue letters of credit under the revolving credit facility, which reduce the total amount available for borrowing. Pursuant to the terms of the revolving credit facility, the Company is required to pay an annual commitment fee that accrues at a rate of 0.20% per annum on the unused portion of the borrowing commitments under the revolving credit facility. In addition, the Company is required to pay a fee in connection with letters of credit issued under the revolving credit facility, which accrues at a rate of 1.5% per annum on the amount of such letters of credit outstanding. There is an additional fronting fee of 0.125% per annum multiplied by the average aggregate daily maximum amount available under all letters of credit. Borrowings under the revolving credit facility bear interest, at the Company’s option, at an annual rate based on LIBOR plus a spread of 1.50% or at an alternative base rate plus a spread of 0.50%. The revolving credit facility contains customary conditions to borrowing, events of default and covenants, including covenants that restrict the Company’s ability to incur indebtedness, grant liens, make distributions to holders of the Company or its subsidiaries’ equity interests, make investments, or engage in transactions with its affiliates. In addition, the revolving credit facility contains financial covenants, including a consolidated leverage ratio covenant and a minimum liquidity balance of $100.0 million, which includes any available borrowing capacity. The Company was in compliance with the covenants of the revolving credit facility as of September 30, 2018 and December 31, 2017, respectively. The Company had an aggregate of $71.8 million of letters of credit outstanding under the revolving credit facility as of September 30, 2018, and the Company’s total available borrowing capacity under the revolving credit facility was $653.2 million as of September 30, 2018. The Company’s letters of credit expire between April of 2019 and April of 2022. |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments and Contingencies |
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| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commitments and Contingencies | Commitments and Contingencies Leases The Company has entered into various non-cancelable operating lease agreements for certain offices and datacenters with contractual lease periods expiring at various dates through 2033. The facility lease agreements generally provide for escalating rental payments and for options to renew, which could increase future minimum lease payments if exercised. The Company recognizes rent expense on a straight-line basis over the lease period and accounts for the difference between straight-line rent and actual lease payments as deferred rent. Gross rent expense was $21.4 million and $64.4 million for the three and nine months ended September 30, 2018, respectively, and $19.0 million and $51.4 million for the three and nine months ended September 30, 2017, respectively. Sublease income, which is recorded as a reduction of rental expense, was $2.8 million and $9.4 million for the three and nine months ended September 30, 2018, respectively, and $3.4 million and $7.2 million for the three and nine months ended September 30, 2017, respectively. Sublease income in excess of the Company’s original lease obligation is split with the original lessor per the terms of the sublease agreement, with the Company’s portion recorded to other income (expense), net. In 2017, the Company entered into a new lease agreement for office space in San Francisco, California, to serve as its new corporate headquarters. The Company took initial possession of the new corporate headquarters in June 2018 and began to recognize rent expense during the three months ended June 30, 2018. The Company expects to start making recurring rental payments under the lease in the third quarter of 2019. Included in the operating lease commitments below are total expected minimum obligations under the lease agreement of $831.6 million, which exclude expected tenant improvement reimbursements from the landlord of approximately $75.0 million and variable operating expenses. The Company’s obligations under the lease are supported by a $34.2 million letter of credit, which reduced the borrowing capacity under the revolving credit facility. In May 2018, the Company amended its lease agreement for its current corporate headquarters, modifying the original lease termination date from 2027 to 2019. As a result of the amendment, the Company expects to vacate its current corporate headquarters in August 2019, but is obligated to pay rent through February 2020. Accordingly, the Company's future operating lease commitments were reduced by $192.4 million. As described in Note 1, "Description of the Business and Summary of Significant Accounting Policies”, the Company was considered the deemed owner of a floor in its previous corporate headquarters, for accounting purposes, as part of a build-to-suit lease agreement. In September 2018, the Company terminated its master lease for its previous corporate headquarters. As the master lease was nearing expiration, the early termination did not have a material impact on the Company's future operating lease commitments. Other commitments Other commitments include payments to third-party vendors for services related to the Company’s infrastructure, infrastructure warranty contracts, asset retirement obligations for office modifications, and a note payable related to financing of infrastructure. Future minimum payments under the Company’s capital leases, non-cancelable operating leases, and other commitments as of September 30, 2018, are as follows.
Legal matters From time to time, the Company is a party to a variety of claims, lawsuits, and proceedings which arise in the ordinary course of business, including claims of alleged infringement of intellectual property rights. The Company records a liability when it believes that it is probable that a loss will be incurred and the amount of loss or range of loss can be reasonably estimated. In its opinion, resolution of pending matters is not likely to have a material adverse impact on its consolidated results of operations, cash flows, or its financial position. Given the unpredictable nature of legal proceedings, the Company bases its estimate on the information available at the time of the assessment. As additional information becomes available, the Company reassesses the potential liability and may revise the estimate. Indemnification The Company’s arrangements generally include certain provisions for indemnifying customers against liabilities if its products or services infringe a third party’s intellectual property rights. It is not possible to determine the maximum potential amount under these indemnification obligations due to the limited history of prior indemnification claims. |
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- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for commitments and contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Stockholders' Equity |
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| Stockholders' Equity Note [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stockholders' Equity | Stockholders’ Equity Common stock The Company’s amended and restated certificate of incorporation authorizes the issuance of Class A common stock, Class B common stock, and Class C common stock. Holders of Class A common stock, Class B common stock, and Class C common stock are entitled to dividends on a pro rata basis, when, as, and if declared by the Company’s Board of Directors, subject to the rights of the holders of the Company’s preferred stock. Holders of Class A common stock are entitled to one vote per share, holders of Class B common stock are entitled to 10 votes per share, and holders of Class C common stock are entitled to zero votes per share. During the three months ended September 30, 2018, holders of 61.3 million shares of Class B common stock voluntarily converted into an equivalent number of shares of Class A common stock. As of September 30, 2018, the Company had authorized 2,400.0 million shares of Class A common stock, 475.0 million shares of Class B common stock, and 800.0 million shares of Class C common stock, each at par value of $0.00001. As of September 30, 2018, 165.4 million shares of Class A common stock, 240.8 million shares of Class B common stock, and no shares of Class C common stock were issued and outstanding. As of December 31, 2017, 8.9 million shares of Class A common stock, 187.9 million shares of Class B common stock, and no shares of Class C common stock were issued and outstanding. Class A shares issued and outstanding as of September 30, 2018 and December 31, 2017 exclude 14.7 million unvested restricted stock awards granted to the Company’s co-founders. See "Co-Founder Grants" section below for further details. Convertible preferred stock Immediately prior to the closing of the Company’s IPO, all of the 147.3 million shares of convertible preferred stock converted into an equivalent number of shares of Class B common stock. Further, pursuant to transfer agreements with certain of the Company’s stockholders, 0.3 million shares of the Company’s convertible preferred stock automatically converted into an equivalent number of shares of Class A common stock. Preferred stock The Company's Board of Directors will have the authority, without further action by the Company's stockholders, to issue up to 240.0 million shares of undesignated preferred stock with rights and preferences, including voting rights, designated from time to time by the Board of Directors. Equity incentive plans Under the 2018 Plan, the Company may grant stock-based awards to purchase or directly issue shares of common stock to employees, directors, and consultants. Options are granted at a price per share equal to the fair market value of the Company's common stock at the date of grant. Options granted are exercisable over a maximum term of 10 years from the date of grant and generally vest over a period of four years. No options have been granted since August of 2015. RSUs and RSAs are also granted under the 2018 Plan. The 2018 Plan will terminate 10 years after the later of (i) its adoption or (ii) the most recent stockholder-approved increase in the number of shares reserved under the 2018 Plan, unless terminated earlier by the Company's Board of Directors. The 2018 Plan was adopted on March 22, 2018 with a reserve of 41.4 million shares of Class A common stock for future issuance. As of September 30, 2018, there were 29.3 million stock-based awards issued and outstanding and 57.5 million shares available for issuance under the 2008 Equity Incentive Plan, the 2017 Equity Incentive Plan, and the 2018 Plan (collectively, the "Plans"). Stock option and restricted stock activity for the Plans was as follows for the nine months ended September 30, 2018:
The following table summarizes information about the pre-tax intrinsic value of options exercised during the three and nine months ended September 30, 2018 and 2017:
As of September 30, 2018, unamortized stock-based compensation related to unvested stock options, restricted stock awards (excluding the Co-Founder Grants), and RSUs was $421.2 million. The weighted-average period over which such compensation expense will be recognized if the requisite service is provided is approximately 2.8 years as of September 30, 2018. Co-Founder Grants In December 2017, the Board of Directors approved a grant to the Company’s co-founders of non-Plan RSAs with respect to 14.7 million shares of Class A Common Stock in the aggregate (collectively, the “Co-Founder Grants”), of which 10.3 million RSAs were granted to Mr. Houston, the Company’s co-founder and Chief Executive Officer, and 4.4 million RSAs were granted to Mr. Ferdowsi, the Company’s co-founder and Director. These Co-Founder Grants have service-based, market-based, and performance-based vesting conditions. The Co-Founder Grants are excluded from Class A common stock issued and outstanding until the satisfaction of these vesting conditions. The Co-Founder Grants also provide the holders with certain stockholder rights, such as the right to vote the shares with the other holders of Class A common stock and a right to cumulative declared dividends. However, the Co-Founder Grants are not considered a participating security for purposes of calculating net loss per share attributable to common stockholders in Note 10, "Net Loss Per Share", as the right to the cumulative declared dividends is forfeitable if the service condition is not met. The Co-Founder Grants are eligible to vest over the ten-year period following the date the Company’s shares of Class A common stock commenced trading on the Nasdaq Global Select Market in connection with the Company’s IPO. The Co-Founder Grants comprise nine tranches that are eligible to vest based on the achievement of stock price goals, each of which are referred to as a Stock Price Target, measured over a consecutive thirty-day trading period during the Performance Period. The Performance Period will begin on January 1, 2019. During the first four years of the Performance Period, no more than 20% of the shares subject to each Co-Founder Grant would be eligible to vest in any calendar year. After the first four years, all shares are eligible to vest based on the achievement of the Stock Price Targets. The Company calculated the grant date fair value of the Co-Founder Grants based on multiple stock price paths developed through the use of a Monte Carlo simulation. A Monte Carlo simulation also calculates a derived service period for each of the nine vesting tranches, which is the measure of the expected time to achieve each Stock Price Target. A Monte Carlo simulation requires the use of various assumptions, including the underlying stock price, volatility, and the risk-free interest rate as of the valuation date, corresponding to the length of time remaining in the performance period, and expected dividend yield. The weighted-average grant date fair value of each Co-Founder Grant was estimated to be $10.60 per share. The weighted-average derived service period of each Co-Founder Grant was estimated to be 5.2 years, and ranged from 2.9 - 6.9 years. The Company will recognize aggregate stock-based compensation expense of $156.2 million over the derived service period of each tranche using the accelerated attribution method as long as the co-founders satisfy their service-based vesting conditions. If the Stock Price Targets are met sooner than the derived service period, the Company will adjust its stock-based compensation to reflect the cumulative expense associated with the vested awards. The Company will recognize expense if the requisite service is provided, regardless of whether the market conditions are achieved. The Performance Vesting Condition for the Co-Founder Grants was satisfied on the date the Company’s shares of Class A common stock commenced trading on the Nasdaq Global Select Market in connection with the Company’s IPO, which was March 23, 2018. The Company recognized $8.8 million and $28.1 million in stock-based compensation related to the Co-Founder Grants during the three and nine months ended September 30, 2018, respectively. As of September 30, 2018, unamortized stock-based compensation expense related to the Co-Founder Grants was $128.1 million. |
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| X | ||||||||||
- Definition The entire disclosure for accounts comprising shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income, and compensation-related costs for equity-based compensation. Includes, but is not limited to, disclosure of policies, compensation plan details, equity-based arrangements to obtain goods and services, deferred compensation arrangements, and employee stock purchase plan details. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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Net Loss Per Share |
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| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net Loss Per Share | Net Loss Per Share The Company computes net loss per share using the two-class method required for multiple classes of common stock and participating securities. The rights, including the liquidation and dividend rights, of the Class A common stock and Class B common stock are substantially identical, other than voting rights. Accordingly, the Class A common stock and Class B common stock share equally in the Company’s net losses. Before the IPO, the Company’s participating securities also included convertible preferred stock. The holders of convertible preferred stock did not have a contractual obligation to share in the Company’s losses, and as a result, net losses were not allocated to these participating securities. The following table sets forth the calculation of basic and diluted net loss per share attributable to common stockholders during the periods presented. The shares issued in the IPO and the private placement and the shares of Class A and Class B common stock issued upon conversion of the outstanding shares of convertible preferred stock in the IPO are included in the table below weighted for the period outstanding in the nine months ended September 30, 2018. Additionally, the voluntary conversions of Class B common stock into Class A common stock are included in the table below weighted for the period outstanding in the three and nine months ended September 30, 2018:
Since the Company was in a loss position for all periods presented, basic net loss per share attributable to common stockholders is the same as diluted net loss per share for all periods as the inclusion of all potential common shares outstanding would have been anti-dilutive. The weighted-average impact of potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive was as follows:
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- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for earnings per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Income Taxes |
9 Months Ended |
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Sep. 30, 2018 | |
| Income Tax Disclosure [Abstract] | |
| Income Taxes | Income Taxes The Company computed the year-to-date income tax provision by applying the estimated annual effective tax rate to the year-to-date pre-tax loss and adjusted for discrete tax items in the period. The Company's income tax was a benefit of $0.2 million and an expense of $2.7 million for the three and nine months ended September 30, 2018, respectively and an expense of $0.5 million and $1.2 million for the three and nine months ended September 30, 2017, respectively. Income tax benefit for the three months ended September 30, 2018 and income tax expense for the nine months ended September 30, 2018, was primarily attributable to U.S. state income taxes, foreign taxes, and increases in uncertain tax positions. For the periods presented, the difference between the U.S. statutory rate and the Company's effective tax rate is primarily due to the full valuation allowance on its U.S. and Irish deferred tax assets. The effective tax rate is also impacted by earnings realized in foreign jurisdictions with statutory tax rates lower than the federal statutory tax rate. The Company periodically evaluates the realizability of its net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is dependent on the Company's ability to generate sufficient future taxable income during periods prior to the expiration of tax attributes to fully utilize these assets. As of September 30, 2018, the Company continues to maintain a full valuation allowance on its deferred tax assets in the U.S. and Ireland. However, the Company has partially benefited from its deferred tax assets due to the recognition of forecasted future income which is more likely than not to be earned in one of its foreign jurisdictions. The Company is subject to income tax audits in the U.S. and foreign jurisdictions. The Company records liabilities related to uncertain tax positions and believes that it has provided adequate reserves for income tax uncertainties in all open tax years. Unrecognized tax benefits increased by approximately $2.9 million and $19.1 million for the three and nine months ended September 30, 2018, of which $0.8 million and $1.4 million for the three and nine months ended September 30, 2018, if recognized, would affect the Company's effective tax rate. Impact of the Tax Cuts and Jobs Act ("2017 Tax Reform Act") The 2017 Tax Reform Act was enacted on December 22, 2017 and provides for significant changes to U.S. tax law. Among other provisions, the 2017 Tax Reform Act reduces the U.S. corporate income tax rate to 21% effective in 2018. The 2017 Tax Reform Act also contains a number of provisions that may impact the Company in future years. Since ongoing guidance and accounting interpretation is expected in the 12 months following enactment, the Company has made certain provisional accounting estimates, as permitted under Staff Accounting Bulletin No. 118, and continues to analyze its accounting policies in this area. The U.S. Treasury Department, the IRS, and other standard-setting bodies could interpret or issue guidance on how provisions of the 2017 Tax Reform Act will be applied or otherwise administered that is different from the Company’s interpretation. As the Company completes its analysis of the 2017 Tax Reform Act, collects and prepares necessary data, and interprets any additional guidance, the Company may make adjustments to provisional amounts that it has recorded that may materially impact the provision for income taxes in the period in which the adjustments are made. The final accounting analysis will occur no later than one year from the date the 2017 Tax Reform Act was enacted. As a result of the reduction in the corporate rate, the Company remeasured its U.S. deferred tax assets and liabilities as of December 31, 2017 to reflect the lower rate expected to apply when these temporary differences reverse. The Company provisionally estimated that the remeasurement resulted in a reduction in deferred tax assets of $63.1 million, which was fully offset by a corresponding change to the Company’s valuation allowance. Although the tax rate reduction was known, the Company had not collected the necessary data to complete its analysis of the effect of the 2017 Tax Reform Act on the underlying deferred taxes and as such, the amounts recorded as of December 31, 2017 were provisional. However, the Company anticipates that any adjustment to provisional amounts recorded would be fully offset by a corresponding change to the Company’s valuation allowance. The Company has not made any additional measurement-period adjustments related to these items during the quarter because the Company is continuing to gather additional information and expects to complete its accounting within the prescribed measurement period. The Company has also considered and estimated a number of provisions of the 2017 Tax Reform Act effective January 1, 2018 as part of the estimated annual effective tax rate as of September 30, 2018. Due to forecasted tax losses and a full valuation allowance in the U.S., these provisions had no material impact to the income tax provision as of September 30, 2018. The 2017 Tax Reform Act also repealed the corporate alternative minimum tax (“AMT”) effective beginning in 2018, and permits AMT credit carryforwards to be refunded to the extent unused through 2021. Since the Company does not anticipate the use of these credits to reduce future federal taxes, the Company was able to reasonably estimate the income tax benefit and income tax receivable of $1.4 million during the year ended December 31, 2017. The Company had not collected the necessary data to complete its analysis of the classification of the AMT credit as a receivable and as such, the amounts recorded as an income tax receivable as of December 31, 2017 were provisional. There have not been material changes to the provisional amounts as of September 30, 2018. The 2017 Tax Reform Act also provides for a transition to a new territorial system of taxation and generally requires companies to include certain untaxed foreign earnings of non-U.S. subsidiaries into taxable income in 2017 (“Transition Tax”). As a result of the cumulative deficits in the Company’s foreign subsidiaries, the Company estimated that it has no Transition Tax inclusion. As of September 30, 2018, the Company has made no changes to its estimated Transition Tax inclusion. The 2017 Tax Reform Act subjects a US shareholder to tax on global intangible low-taxed income (“GILTI”) earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5 Accounting for GILTI, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred as a period expense only. Given the complexity of this provision, the Company is still evaluating the effects of the provision on its condensed consolidated financial statements and has not yet determined its accounting policy as of September 30, 2018. The Company has, however, included the estimated impact related to current year operations only in its annual effective tax rate for 2018 and has not provided for additional impact on deferred items. The Company expects to complete its accounting within the prescribed measurement period. |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Related Party Transactions |
9 Months Ended |
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Sep. 30, 2018 | |
| Related Party Transactions [Abstract] | |
| Related Party Transactions | Related Party Transactions Dropbox Charitable Foundation During the year ended December 31, 2016, two of the Company’s controlling shareholders formed the Dropbox Charitable Foundation, a Delaware non-stock corporation (the “Foundation”). The primary purpose of the Foundation is to engage in charitable and educational activities within the meaning of Section 501(c)(3) of the Code. The Foundation is governed by a Board of Directors, a majority of which are independent. Both shareholders made contributions to the Foundation during the year ended December 31, 2016, comprised entirely of shares of Dropbox common stock. The Company has not consolidated the Foundation in the accompanying condensed consolidated financial statements, as the Company does not have control of the entity. During the three and nine months ended September 30, 2018, the Company did not make cash contributions to the Foundation. During the second quarter of 2017, the Company donated shares of Class B common stock to initially fund the Foundation and recorded $9.4 million of expense to general and administrative expenses based on the Company’s estimate of the then current fair value of the contributed shares, which is included in the results for the nine months ended September 30, 2018. The Company made additional cash contributions to the Foundation of $0.4 million and $0.8 million during the three and nine months ended September 30, 2017, respectively. Hewlett Packard Enterprise The Company has engaged in various commercial relationships with Hewlett Packard Enterprise (“HPE”), whose chief executive officer was appointed to the Dropbox Board of Directors in September 2017. The chief executive officer of HPE resigned effective February 1, 2018. The Company's commercial relationships with HPE include infrastructure equipment under capital leases, the purchase of commercial products and other services, and a multi-year subscription agreement for access to the Dropbox platform. From the beginning of the fiscal year through the date of the resignation of the former chief executive officer of HPE, the Company made payments of $5.5 million for infrastructure equipment under capital leases and for commercial products and services provided by HPE. |
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- References No definition available.
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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Geographic Areas | Geographic Areas Long-lived assets The following table sets forth long-lived assets by geographic area:
Revenue Revenue by geography is generally based on the address of the customer as defined in the Company’s subscription agreement. The following table sets forth revenue by geographic area for the three and nine months ended September 30, 2018 and 2017.
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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Description of the Business and Summary of Significant Accounting Policies (Policies) |
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||
| Basis of presentation | The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the United States of America generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission ("SEC") regarding interim financial reporting. The accompanying unaudited condensed consolidated financial statements include the accounts of Dropbox and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. |
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| Basis of consolidation | The condensed consolidated balance sheet as of December 31, 2017 included herein was derived from the audited financial statements as of that date. The unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the balance sheets, statements of operations, statements of comprehensive loss and the statements of cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year ended December 31, 2018 or any future period. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended December 31, 2017, included in the Company's prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended, on March 23, 2018, referred to as the Prospectus. |
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| Use of estimates | The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the Company’s condensed consolidated financial statements and accompanying notes. These estimates are based on information available as of the date of the condensed consolidated financial statements. Management evaluates these estimates and assumptions on a regular basis. Actual results may differ materially from these estimates. The Company’s most significant estimates and judgments involve recognition of revenue, the measurement of the Company’s stock-based compensation, including the estimation of the underlying deemed fair value of common stock in periods prior to the date of the Company's IPO, the estimation of the fair value of market-based awards, and the valuation of acquired intangible assets and goodwill from business combinations. |
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| Financial information about segments and geographic areas | The Company manages its operations and allocates resources as a single operating segment. Further, the Company manages, monitors, and reports its financials as a single reporting segment. The Company’s chief operating decision-maker is its Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources. |
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| Foreign currency transactions | The assets and liabilities of the Company’s foreign subsidiaries are translated from their respective functional currencies into U.S. dollars at the exchange rates in effect at the balance sheet date. Revenue and expense amounts are translated at the average exchange rate for the period. Foreign currency translation gains and losses are recorded in other comprehensive income (loss). Gains and losses realized from foreign currency transactions (those transactions denominated in currencies other than the foreign subsidiaries’ functional currency) are included in other income (expense), net. Monetary assets and liabilities are remeasured using foreign currency exchange rates at the end of the period, and non-monetary assets are remeasured based on historical exchange rates. |
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| Revenue recognition | The Company derives its revenue from subscription fees from customers for access to its platform. The Company’s policy is to exclude sales and other indirect taxes when measuring the transaction price of its subscription agreements. The Company accounts for revenue contracts with customers through the following steps:
The Company’s subscription agreements generally have monthly or annual contractual terms and a small percentage have multi-year contractual terms. Revenue is recognized ratably over the related contractual term beginning on the date that the platform is made available to a customer. Access to the platform represents a series of distinct services as the Company continually provides access to, and fulfills its obligation to the end customer over the subscription term. The series of distinct services represents a single performance obligation that is satisfied over time. The Company recognizes revenue ratably because the customer receives and consumes the benefits of the platform throughout the contract period. The Company’s contracts are generally non-cancelable. The Company bills in advance for monthly contracts and typically bills annually in advance for contracts with terms of one year or longer. The Company also recognizes an immaterial amount of contract assets, or unbilled receivables, primarily relating to consideration for services completed but not billed at the reporting date. Unbilled receivables are classified as receivables when the Company has the right to invoice the customer. The Company records contract liabilities when cash payments are received or due in advance of performance to deferred revenue. Deferred revenue primarily relates to the advance consideration received from the customer. The price of subscriptions is generally fixed at contract inception and therefore, the Company’s contracts do not contain a significant amount of variable consideration. As a result, the amount of revenue recognized in the periods presented from performance obligations satisfied (or partially satisfied) in previous periods was not material. |
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| Stock-based compensation | The Company has granted RSUs to its employees and members of the Board of Directors under the 2008 Equity Incentive Plan (“2008 Plan”), the 2017 Equity Incentive Plan (“2017 Plan”), and the 2018 Equity Incentive Plan ("2018 Plan"). The Company had two types of RSUs outstanding as of September 30, 2018:
The Performance Vesting Condition for the two-tier RSUs was satisfied upon the effectiveness of the registration statement related to the Company's IPO, which was March 22, 2018. On that date, the Company recognized the cumulative unrecognized expense of the two-tier RSUs, using the accelerated attribution method, which is included in the Company's results for the nine months ended September 30, 2018. See "—Initial public offering and private placement” for further discussion. As of September 30, 2018, the remaining unamortized stock-based compensation related to the two-tier RSUs was $0.4 million, which will be recognized if the requisite service is provided over a weighted average period of 0.3 years. Since August 2015, the Company has granted RSUs as the only stock-based payment awards to its employees, with the exception of awards granted to its co-founders, and has not granted any stock options since then. The fair values of the common stock underlying the RSUs granted in periods prior to the date of the Company's IPO were determined by the Board of Directors, with input from management and contemporaneous third-party valuations, which were performed at least quarterly. For valuations after the Company's IPO, the Board of Directors will determine the fair value of each share of underlying common stock based on the closing price of the Company's Class A common stock as reported on the Nasdaq Global Select Market on the date of the grant. In December 2017, the Board of Directors approved a grant to the Company’s co-founders of restricted stock awards (“RSAs”) with respect to 14.7 million shares of Class A Common Stock in the aggregate (collectively, the “Co-Founder Grants”), of which 10.3 million RSAs were granted to Mr. Houston, the Company’s co-founder and Chief Executive Officer, and 4.4 million RSAs were granted to Mr. Ferdowsi, the Company’s co-founder and Director. These Co-Founder Grants have service-based, market-based, and performance-based vesting conditions. The Co-Founder Grants comprise nine tranches that are eligible to vest based on the achievement of stock price goals, or, each, a Stock Price Target. The Company estimated the grant date fair value of the Co-Founder Grants using a model based on multiple stock price paths developed through the use of a Monte Carlo simulation that incorporates into the valuation the possibility that the Stock Price Targets may not be satisfied. The average grant date fair value of each Co-Founder Grant was estimated to be $10.60 per share, and the Company will recognize aggregate stock-based compensation expense of $156.2 million over the requisite service period of each tranche, which ranged from 2.9 to 6.9 years, using the accelerated attribution method. If the Stock Price Targets are met sooner than the derived service period, the Company will adjust its stock-based compensation to reflect the cumulative expense associated with the vested awards. The Company will recognize expense if the requisite service is provided, regardless of whether the market conditions are achieved. The Co-Founder Grants contain an implied performance-based vesting condition because the Stock Price Targets are based on the trailing 30-day average price of the shares from an established national securities exchange or automated quotation system. Accordingly, no vesting could occur until the completion of the Company’s IPO. The relevant performance-based vesting condition for the Co-Founder Grants was satisfied on the date the Company’s shares of Class A common stock commenced trading on the Nasdaq Global Select Market, in connection with the Company’s IPO, which was March 23, 2018. The Company recognized $8.8 million and $28.1 million in stock-based compensation related to the Co-Founder Grants during the three and nine months ended September 30, 2018, respectively. |
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| Cash and cash equivalents | Cash consists primarily of cash on deposit with banks and includes amounts in transit from payment processors for credit and debit card transactions, which typically settle within five business days. Cash equivalents include highly liquid investments purchased with an original maturity date of 90 days or less from the date of purchase. |
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| Short-term investments | The Company’s short-term investments are primarily comprised of corporate notes and obligations, U.S. treasury securities, certificates of deposits, U.S. agency obligations, and commercial paper. The Company determines the appropriate classification of its short-term investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its short-term investments as available-for-sale securities as the Company may sell these securities at any time for use in its current operations or for other purposes, even prior to maturity. As a result, the Company classifies its short-term investments, including securities with stated maturities beyond twelve months, within current assets in the condensed consolidated balance sheets. The Company's short-term investments are classified as available-for-sale securities and are recorded at fair value each reporting period. Unrealized gains and losses on these short-term investments are reported as a separate component of accumulated other comprehensive income (loss) in the condensed consolidated balance sheets until realized. Interest income is reported within interest income (expense), net in the condensed consolidated statements of operations. The Company periodically evaluates its short-term investments to assess whether those with unrealized loss positions are other-than-temporarily impaired. The Company considers various factors in determining whether to recognize an impairment charge, including the length of time the investment has been in a loss position, the extent to which the fair value is less than the Company’s cost basis, and the financial condition and near-term prospects of the investee. Realized gains and losses are determined based on the specific identification method and are reported in other income (expense), net in the condensed consolidated statements of operations. If the Company determines that the decline in an investment’s fair value is other-than-temporary, the difference is recognized as an impairment loss in the condensed consolidated statements of operations. |
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| Concentrations of credit risk | Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, accounts receivable, and short-term investments. The Company places its cash and cash equivalents and short-term investments with well-established financial institutions. Trade accounts receivables are typically unsecured and are derived from revenue earned from customers located around the world. |
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| Non-trade receivables | The Company records non-trade receivables to reflect amounts due for activities outside of its subscription agreements. Historically, the Company’s non-trade receivables have related primarily to receivables resulting from tenant improvement allowances. |
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| Deferred commissions, net | Deferred commissions, net is stated as gross deferred commissions less accumulated amortization. Sales commissions earned by the Company’s sales force and third-party resellers, as well as related payroll taxes, are considered to be incremental and recoverable costs of obtaining a contract with a customer. These amounts have been capitalized as deferred commissions within prepaid and other current assets and other assets on the condensed consolidated balance sheets. |
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| Property and equipment, net | Equipment is stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful life of the related asset, which is generally three to seven years. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the term of the related lease. In the first quarter of 2018, the Company determined that the useful lives of certain infrastructure equipment, which are depreciated through cost of revenue, should be increased from three to four years. The Company accounted for this as a change in estimate that was applied prospectively, effective as of January 1, 2018. This change in useful life resulted in a reduction in depreciation expense within cost of revenue of $2.8 million and $13.6 million during the three and nine months ended September 30, 2018, respectively. The following table presents the estimated useful lives of property and equipment:
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| Lease obligations | The Company leases office space, datacenters, and equipment under non-cancelable capital and operating leases with various expiration dates through 2033. Certain of the Company’s operating lease agreements contain tenant improvement allowances from its landlords. These allowances are accounted for as lease incentive obligations and are amortized as reductions to rent expense over the lease term. In June 2018, the Company took initial possession of the first phase of its new corporate headquarters and recorded a lease incentive obligation related to this phase. As of September 30, 2018, $2.6 million was included in accrued and other current liabilities and $37.0 million was included in deferred rent, non-current in the Company's condensed consolidated balance sheets. In addition, certain of the operating lease agreements contain rent concession, rent escalation, and option to renew provisions. Rent concession and rent escalation provisions are considered in determining the straight-line rent expense to be recorded over the lease term. Lease expense is recognized on a straight-line basis over the lease term commencing on the date the Company has the right to use the leased property. The Company does not assume renewals in its determination of the lease term unless the renewals are deemed to be reasonably assured at lease inception. In 2012, the Company undertook a series of structural improvements to the floor that it occupied in its previous corporate headquarters. As a result of the requirement to fund construction costs and its responsibility for cost overruns during the construction period, the Company was considered the deemed owner of the floor for accounting purposes. Due to the presence of a standby letter of credit as a security deposit, the Company was deemed to have continuing involvement after the construction period. As such, it accounted for this arrangement as owned real estate and recorded a building asset and an imputed financing obligation for its liability to the legal owners. In September 2018, the Company terminated its master lease for its previous corporate headquarters, the impact of which is described in Note 4, "Property and Equipment, Net". The Company leases certain equipment from various third parties, including from a related party, through equipment financing leases under capital leases. See Note 12, “Related Party Transactions” for additional details. These leases either include a bargain purchase option, a full transfer of ownership at the completion of the lease term, or the terms of the leases are at least 75 percent of the useful lives of the assets and are therefore classified as capital leases. These leases are capitalized in property and equipment and the related amortization of assets under capital leases is included in depreciation and amortization expense in the Company’s condensed consolidated statements of operations. Initial asset values and lease obligations are based on the present value of future minimum lease payments. |
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| Long-lived assets, including goodwill and other acquired intangible assets, net | The Company evaluates the recoverability of its property and equipment and finite-lived intangible assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. The evaluation is performed at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Recoverability of these assets is measured by a comparison of the carrying amounts to the future undiscounted cash flows the assets are expected to generate. If such review determines that the carrying amount of specific property and equipment or intangible assets is not recoverable, the carrying amount of such assets is reduced to its fair value. The Company reviews goodwill for impairment at least annually in the fourth quarter, or more frequently if events or changes in circumstances would more likely than not reduce the fair value of its single reporting unit below its carrying value. The Company has not recorded impairment charges on property and equipment, goodwill, or intangible assets for the periods presented in these condensed consolidated financial statements. Acquired property and equipment and finite-lived intangible assets are amortized over their useful lives. The Company evaluates the estimated remaining useful life of these assets when events or changes in circumstances warrant a revision to the remaining period of amortization. If the Company revises the estimated useful life assumption for any asset, the remaining unamortized balance is amortized or depreciated over the revised estimated useful life on a prospective basis. |
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| Income taxes | Deferred income tax balances reflect the effects of temporary differences between the financial reporting and tax bases of the Company’s assets and liabilities using enacted tax rates expected to apply when taxes are actually paid or recovered. In addition, deferred tax assets are recorded for net operating loss and credit carryforwards. A valuation allowance is provided against deferred tax assets unless it is more likely than not that they will be realized based on all available positive and negative evidence. Such evidence includes, but is not limited to, recent cumulative earnings or losses, expectations of future taxable income by taxing jurisdiction, and the carry-forward periods available for the utilization of deferred tax assets. The Company uses a two-step approach to recognizing and measuring uncertain income tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. The Company recognizes interest and penalties related to unrecognized tax benefits as income tax expense. Although the Company believes that it has adequately reserved for its uncertain tax positions, it can provide no assurance that the final tax outcome of these matters will not be materially different. The Company evaluates its uncertain tax positions on a regular basis and evaluations are based on a number of factors, including changes in facts and circumstances, changes in tax law, such as the 2017 Tax Cuts and Jobs Act ("2017 Tax Reform Act"), correspondence with tax authorities during the course of an audit, and effective settlement of audit issues. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on the Company’s financial condition and results of operations. |
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| Fair value measurement | The Company applies fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining fair value measurements for assets and liabilities, the Company considers the principal or most advantageous market in which it would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as risks inherent in valuation techniques, transfer restrictions, and credit risk. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1—Quoted prices in active markets for identical assets or liabilities. Level 2—Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3—Inputs that are generally unobservable and typically reflect management’s estimate of assumptions that market participants would use in pricing the asset or liability. |
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| Recently issued accounting pronouncements not yet adopted and Recently adopted accounting pronouncements | In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (Subtopic 825), which primarily affects the accounting for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. In addition, the FASB clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The accounting for other financial instruments, such as loans, investments in debt securities and financial liabilities is largely unchanged. The Company adopted ASU No. 2016-01 on January 1, 2018. The adoption of the standard did not have a material impact on the Company's condensed consolidated financial statements. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes: Intra-Entity Transfers Other than Inventory (Topic 740), which requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The Company adopted ASU No. 2016-16 on January 1, 2018. The adoption of the guidance did not have a material impact on the Company's condensed consolidated financial statements. In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842). Most prominent among the changes in the standard is the recognition of right of use assets and lease liabilities by lessees for those leases classified as operating leases under current GAAP. Under the standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Company is required to adopt the standard using the modified retrospective approach and has elected to use the optional transition method related to comparative reporting at adoption. The new standard is effective for fiscal years beginning after December 15, 2018. Early adoption by public entities is permitted. The Company is in the process of finalizing changes to its systems, processes, disclosures and controls in order to adopt the new standard on January 1, 2019. The Company anticipates the adoption of this standard will result in a substantial increase in its non-current assets and liabilities recorded on the condensed consolidated balance sheets. The adoption of the standard is not expected to have a material impact on the consolidated statement of operations. While the Company is assessing all potential impacts of the adoption of the standard, it currently expects the most significant impact to be the capitalization of right-of-use assets and lease liabilities for its office space and datacenter operating leases. The Company expects its accounting for capital leases related to infrastructure equipment to remain substantially unchanged under the new standard. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU No. 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Reform Act. The amendments in ASU No. 2018-02 also require certain disclosures about stranded tax effects. The guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption in any period is permitted. The Company is currently evaluating the impact and timing of adopting ASU No. 2018-02. In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting. Under existing U.S. GAAP, the measurement date for equity awards granted to nonemployees is the earlier of the performance commitment date or the date the performance is complete. The amendments in ASU No. 2018-07 allow for measurement of these awards on the grant date, consistent with equity awards granted to employees. The guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption in any period is permitted. The Company does not expect the impact of adoption to have a material impact on its condensed consolidated financial statements and is currently evaluating the timing of adopting ASU No. 2018-07. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820), which amends disclosure requirements for fair value measurements by requiring new disclosures, modifying existing requirements, and eliminating others. The amendments are the result of a broader disclosure project, which aims to improve the effectiveness of disclosures. ASU No. 2018-13 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption to have a significant impact on its disclosures and is currently evaluating the timing of adopting ASU No. 2018-13. In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. Under existing U.S. GAAP, there is diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. The amendments in ASU No. 2018-15 amend the definition of a hosting arrangement and requires a customer in a hosting arrangement that is a service contract to capitalize certain costs as if the arrangement were an internal-use software project. The guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact and timing of adopting ASU No. 2018-15. |
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| Goodwill | Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Goodwill amounts are not amortized, but tested for impairment on an annual basis. |
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| Net loss per share | The Company computes net loss per share using the two-class method required for multiple classes of common stock and participating securities. The rights, including the liquidation and dividend rights, of the Class A common stock and Class B common stock are substantially identical, other than voting rights. Accordingly, the Class A common stock and Class B common stock share equally in the Company’s net losses. Before the IPO, the Company’s participating securities also included convertible preferred stock. The holders of convertible preferred stock did not have a contractual obligation to share in the Company’s losses, and as a result, net losses were not allocated to these participating securities. |
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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). No definition available.
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- Definition Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Disclosure of accounting policy for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to employees, including equity-based arrangements; discloses methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Disclosure of accounting policy for credit risk. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities. No definition available.
|
| X | ||||||||||
- Definition Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Disclosure of accounting policy for the impairment and disposal of long-lived assets including goodwill and other intangible assets. No definition available.
|
| X | ||||||||||
- Definition Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for leasing arrangement entered into by lessee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for investments in debt and equity securities that have readily determinable fair values (marketable securities). At a minimum, the disclosure might address accounting policies for investments classified as trading, available for sale, or held to maturity and may include how the entity determines whether impairments of available for sale or held to maturity investments are other than temporary, how the fair values of the entity's securities are determined, and the entity's accounting treatment for transfers between investment categories. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for trade and other accounts receivable, and finance, loan and lease receivables, including those classified as held for investment and held for sale. This disclosure may include (1) the basis at which such receivables are carried in the entity's statements of financial position (2) how the level of the valuation allowance for receivables is determined (3) when impairments, charge-offs or recoveries are recognized for such receivables (4) the treatment of origination fees and costs, including the amortization method for net deferred fees or costs (5) the treatment of any premiums or discounts or unearned income (6) the entity's income recognition policies for such receivables, including those that are impaired, past due or placed on nonaccrual status and (7) the treatment of foreclosures or repossessions (8) the nature and amount of any guarantees to repurchase receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for incremental direct costs incurred related to the acquisition or origination of a customer contract in a transaction that results in revenue deferral (that is, whether such costs are expensed as incurred or deferred and charged to expense in proportion to the revenue recognized.) Also describes the entity's policy for determining which costs are capitalized as contract acquisition or origination costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for segment reporting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Description of the Business and Summary of Significant Accounting Policies (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Estimated Useful Lives of Property and Equipment | The following table presents the estimated useful lives of property and equipment:
Property and equipment, net consisted of the following:
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Cash, Cash Equivalents and Short-Term Investments (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash and Cash Equivalents [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Cash, Cash Equivalents and Short-Term Investments | The amortized cost, unrealized gains and losses and estimated fair value of the Company's cash, cash equivalents and short-term investments as of September 30, 2018 consisted of the following:
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| Contractual Maturities of Short Term Investments | The following table presents the contractual maturities of the Company’s short-term investments as of September 30, 2018:
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- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. No definition available.
|
Fair Value Measurements (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Fair Value Assets Measured On Recurring Basis | The following table presents information about the Company’s financial instruments that are measured at fair value on a recurring basis using the input categories discussed in Note 1:
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Property and Equipment, Net (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Property and Equipment, Net | The following table presents the estimated useful lives of property and equipment:
Property and equipment, net consisted of the following:
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Accrued and Other Current Liabilities (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Payables and Accruals [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Accrued And Other Current Liabilities | Accrued and other current liabilities consisted of the following:
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| X | ||||||||||
- Definition Schedule Of Accrued Liabilities And Other Current Liabilities No definition available.
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| X | ||||||||||
- References No definition available.
|
Commitments and Contingencies (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Future Minimum Payments | Future minimum payments under the Company’s capital leases, non-cancelable operating leases, and other commitments as of September 30, 2018, are as follows.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Stockholders' Equity (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stockholders' Equity Note [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Stock Option and Restricted Stock Activity | Stock option and restricted stock activity for the Plans was as follows for the nine months ended September 30, 2018:
|
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| Schedule of Pre-Tax Intrinsic Value | The following table summarizes information about the pre-tax intrinsic value of options exercised during the three and nine months ended September 30, 2018 and 2017:
|
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| X | ||||||||||
- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Tabular disclosure for share-based compensation plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
|
Net Loss Per Share (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the calculation of basic and diluted net loss per share attributable to common stockholders during the periods presented. The shares issued in the IPO and the private placement and the shares of Class A and Class B common stock issued upon conversion of the outstanding shares of convertible preferred stock in the IPO are included in the table below weighted for the period outstanding in the nine months ended September 30, 2018. Additionally, the voluntary conversions of Class B common stock into Class A common stock are included in the table below weighted for the period outstanding in the three and nine months ended September 30, 2018:
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| Schedule of Potentially Dilutive Securities Excluded from Computation of Earnings Per Share | The weighted-average impact of potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive was as follows:
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Geographic Areas (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-lived Assets by Geographic Areas | The following table sets forth long-lived assets by geographic area:
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| Revenue by Geographic Areas | The following table sets forth revenue by geographic area for the three and nine months ended September 30, 2018 and 2017.
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| X | ||||||||||
- Definition Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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Description of the Business and Summary of Significant Accounting Policies - Narrative (Details) |
1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Apr. 03, 2018
USD ($)
|
Mar. 28, 2018
USD ($)
$ / shares
shares
|
Mar. 27, 2018
USD ($)
$ / shares
shares
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Mar. 26, 2018
shares
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Mar. 22, 2018
USD ($)
|
Mar. 07, 2018 |
Dec. 31, 2017
USD ($)
tranche
$ / shares
shares
|
Sep. 30, 2018
USD ($)
shares
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Mar. 31, 2018
USD ($)
shares
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Sep. 30, 2017
USD ($)
|
Sep. 30, 2018
USD ($)
award
$ / shares
shares
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Sep. 30, 2017
USD ($)
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Dec. 31, 2017
USD ($)
tranche
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| Conversion of Stock [Line Items] | |||||||||||||
| Revenue, performance obligation, description of timing | one year or longer | ||||||||||||
| Stock issued in IPO (in shares) | shares | 26,822,409 | ||||||||||||
| Share price of stock issued in IPO (in dollars per share) | $ / shares | $ 21.00 | ||||||||||||
| Proceeds from initial public offering and private placement | $ 538,200,000 | $ 746,600,000 | $ 0 | ||||||||||
| Offering costs | $ 6,900,000 | 4,500,000 | 0 | ||||||||||
| Reverse stock split ratio | 0.6667 | ||||||||||||
| Net foreign currency transaction gain (loss) | $ (1,000,000) | $ 2,900,000 | (1,400,000) | 6,900,000 | |||||||||
| Revenue recognized | 213,200,000 | 178,000,000 | 390,100,000 | 324,600,000 | |||||||||
| Non-trade receivables | $ 5,200,000 | 44,800,000 | 44,800,000 | $ 5,200,000 | |||||||||
| Tenant improvement allowance receivable related to the new corporate headquarters included in prepaid expenses and other current assets and other assets | 40,500,000 | 40,500,000 | |||||||||||
| Additional contract costs deferred | 7,400,000 | 6,300,000 | $ 24,900,000 | 16,000,000 | |||||||||
| Deferred contract costs, amortization period | 5 years | ||||||||||||
| Amortization of deferred commissions | 3,200,000 | 2,000,000 | $ 8,500,000 | 4,600,000 | |||||||||
| Impairment loss related to deferred costs | 0 | 0 | 0 | 0 | |||||||||
| Reduction in depreciation expense | (43,300,000) | $ (42,000,000) | (115,400,000) | $ (130,100,000) | |||||||||
| Change in Accounting Method Accounted for as Change in Estimate | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Reduction in depreciation expense | 2,800,000 | $ 13,600,000 | |||||||||||
| Infrastructure Equipment | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Property and equipment, useful life | 4 years | 3 years | |||||||||||
| Other Current Liabilities | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Lease incentive obligation | 2,600,000 | $ 2,600,000 | |||||||||||
| Deferred rent, non-current | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Lease incentive obligation | 37,000,000 | 37,000,000 | |||||||||||
| Deferred Commissions | Prepaid Expenses and Other Current Assets | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Deferred contract costs | 8,100,000 | 13,000,000 | 13,000,000 | $ 8,100,000 | |||||||||
| Deferred Commissions | Other Assets | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Deferred contract costs | 24,800,000 | 36,300,000 | $ 36,300,000 | $ 24,800,000 | |||||||||
| Customer Concentration Risk | Trade and Other Receivables | Customer A | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Concentration risk, percentage | 13.00% | 18.00% | |||||||||||
| Customer Concentration Risk | Trade and Other Receivables | Customer B | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Concentration risk, percentage | 40.00% | 27.00% | |||||||||||
| Two-Tier RSUs | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Recognized cumulative unrecognized stock-based compensation | $ 418,700,000 | ||||||||||||
| Remaining unamortized stock-based compensation | 400,000 | $ 400,000 | |||||||||||
| Unamortized stock-based compensation, requisite service period | 3 months 24 days | ||||||||||||
| Shares released (in shares) | shares | 26,800,000 | ||||||||||||
| Employer related payroll expense | $ 13,900,000 | ||||||||||||
| Vesting period | 4 years | ||||||||||||
| Two-Tier RSUs | Tranche One | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Vesting period | 1 year | ||||||||||||
| Restricted Stock Units (RSUs) | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Number of award types | award | 2 | ||||||||||||
| One-Tier RSU | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Vesting period | 4 years | ||||||||||||
| One-Tier RSU | Tranche One | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Vesting period | 1 year | ||||||||||||
| Restricted Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares granted (in shares) | shares | 13,300,000 | ||||||||||||
| Shares granted (in dollars per share) | $ / shares | $ 19.25 | ||||||||||||
| Restricted Stock | Co-Founder Grants | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Remaining unamortized stock-based compensation | $ 156,200,000 | 128,100,000 | $ 128,100,000 | $ 156,200,000 | |||||||||
| Shares granted (in shares) | shares | 14,700,000 | ||||||||||||
| Number of tranches | tranche | 9 | 9 | |||||||||||
| Shares granted (in dollars per share) | $ / shares | $ 10.60 | ||||||||||||
| Award requisite period | 5 years 2 months 12 days | ||||||||||||
| Allocated share-based compensation expense | $ 8,800,000 | $ 28,100,000 | |||||||||||
| Restricted Stock | Co-Founder Grants | Tranche One | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Vesting period | 4 years | ||||||||||||
| Restricted Stock | Co-Founder Grants | Chief Executive Officer | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares granted (in shares) | shares | 10,300,000 | ||||||||||||
| Restricted Stock | Co-Founder Grants | Director | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares granted (in shares) | shares | 4,400,000 | ||||||||||||
| Minimum | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Property and equipment, useful life | 3 years | ||||||||||||
| Minimum | Restricted Stock | Co-Founder Grants | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Award requisite period | 2 years 10 months 25 days | 2 years 10 months 25 days | |||||||||||
| Maximum | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Property and equipment, useful life | 7 years | ||||||||||||
| Maximum | Restricted Stock | Co-Founder Grants | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Award requisite period | 6 years 10 months 25 days | 6 years 10 months 25 days | |||||||||||
| Private Placement | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Proceeds from initial public offering and private placement | $ 100,000,000 | ||||||||||||
| Convertible preferred stock | Conversion of Convertible Preferred Stock to Class B Common Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares converted in conversion (in shares) | shares | 147,310,563 | ||||||||||||
| Convertible preferred stock | Conversion of Convertible Preferred Stock to Class A Common Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares converted in conversion (in shares) | shares | 258,620 | ||||||||||||
| Class B common stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares converted in conversion (in shares) | shares | 61,300,000 | ||||||||||||
| Class B common stock | Conversion of Convertible Preferred Stock to Class B Common Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares issued in conversion (in shares) | shares | 147,310,563 | ||||||||||||
| Class B common stock | Conversion of Class B Common Stock to Class A Common Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares converted in conversion (in shares) | shares | 2,609,951 | ||||||||||||
| Class A common stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares issued in conversion (in shares) | shares | 61,300,000 | ||||||||||||
| Class A common stock | Conversion of Convertible Preferred Stock to Class A Common Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares issued in conversion (in shares) | shares | 258,620 | ||||||||||||
| Class A common stock | Conversion of Class B Common Stock to Class A Common Stock | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Shares issued in conversion (in shares) | shares | 2,609,951 | ||||||||||||
| Class A common stock | Private Placement | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Sale of stock (in shares) | shares | 4,761,905 | ||||||||||||
| Share price of stock sold in shares (in dollars per share) | $ / shares | $ 21.00 | ||||||||||||
| Class A common stock | Underwriters Over-allotment Option | |||||||||||||
| Conversion of Stock [Line Items] | |||||||||||||
| Sale of stock (in shares) | shares | 5,400,000 | ||||||||||||
| Share price of stock sold in shares (in dollars per share) | $ / shares | $ 21.00 | ||||||||||||
| Proceeds received in sale of stock | $ 108,400,000 | ||||||||||||
| X | ||||||||||
- Definition Capitalized Contract Cost, Amortization Period No definition available.
|
| X | ||||||||||
- Definition Capitalized Contract Costs, Additions No definition available.
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| X | ||||||||||
- Definition Lease Incentive Obligation No definition available.
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| X | ||||||||||
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Award Types No definition available.
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| X | ||||||||||
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Tranches No definition available.
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| X | ||||||||||
- Definition Tenant Improvement Allowance Receivable Included In Current Assets No definition available.
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| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The amount of expense recognized in the current period for the periodic realization of capitalized fees that were paid to salespeople, distributors, brokers, and agents at the time of the conclusion of the sale. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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| X | ||||||||||
- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The aggregate amount of expenditures for salaries, wages, profit sharing and incentive compensation, and other employee benefits, including equity-based compensation, and pension and other postretirement benefit expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The sum of amounts currently receivable other than from customers. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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| X | ||||||||||
- Definition Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Cash received on stock transaction after deduction of issuance costs. No definition available.
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| X | ||||||||||
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. No definition available.
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| X | ||||||||||
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
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| X | ||||||||||
- Definition Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition. No definition available.
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| X | ||||||||||
- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Number of shares for which recognition of compensation cost was accelerated. No definition available.
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| X | ||||||||||
- Definition Per share or per unit amount of equity securities issued. No definition available.
|
| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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Description of the Business and Summary of Significant Accounting Policies - Performance Obligations (Details) $ in Millions |
9 Months Ended |
|---|---|
|
Sep. 30, 2018
USD ($)
| |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Remaining performance obligation | $ 523.3 |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation satisfaction period | 12 months |
| X | ||||||||||
- References No definition available.
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Description of the Business and Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Property and Equipment (Details) |
9 Months Ended |
|---|---|
Sep. 30, 2018 | |
| Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 3 years |
| Minimum | Buildings | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 20 years |
| Minimum | Datacenter and other computer equipment | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 3 years |
| Minimum | Office equipment and other | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 3 years |
| Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 7 years |
| Maximum | Buildings | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 30 years |
| Maximum | Datacenter and other computer equipment | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 5 years |
| Maximum | Office equipment and other | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 7 years |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash, Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|---|---|
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | $ 536.2 | $ 430.0 | $ 422.7 | $ 352.7 |
| Total cash equivalents | 536.2 | |||
| Short-term investments, amortized cost | 503.1 | |||
| Short-term investments, unrealized gain | 0.1 | |||
| Short-term investments, unrealized loss | (0.3) | |||
| Short-term investments, estimated fair value | 502.9 | |||
| Total cash, cash equivalents, and short term investments, before unrealized gains (losses) on investments | 1,039.3 | |||
| Total cash, cash equivalents, and short term investments | 1,039.1 | |||
| Corporate notes and obligations | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Short-term investments, amortized cost | 206.7 | |||
| Short-term investments, unrealized gain | 0.1 | |||
| Short-term investments, unrealized loss | (0.2) | |||
| Short-term investments, estimated fair value | 206.6 | |||
| U.S. Treasury securities | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Short-term investments, amortized cost | 183.3 | |||
| Short-term investments, unrealized gain | 0.0 | |||
| Short-term investments, unrealized loss | (0.1) | |||
| Short-term investments, estimated fair value | 183.2 | |||
| Certificates of deposit | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Short-term investments, amortized cost | 58.9 | |||
| Short-term investments, unrealized gain | 0.0 | |||
| Short-term investments, unrealized loss | 0.0 | |||
| Short-term investments, estimated fair value | 58.9 | |||
| U.S. agency obligations | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Short-term investments, amortized cost | 36.4 | |||
| Short-term investments, unrealized gain | 0.0 | |||
| Short-term investments, unrealized loss | 0.0 | |||
| Short-term investments, estimated fair value | 36.4 | |||
| Commercial paper | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Short-term investments, amortized cost | 17.8 | |||
| Short-term investments, unrealized gain | 0.0 | |||
| Short-term investments, unrealized loss | 0.0 | |||
| Short-term investments, estimated fair value | 17.8 | |||
| Cash | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | 96.3 | 62.9 | ||
| Total cash equivalents | 96.3 | |||
| Money market funds | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | 415.4 | $ 367.1 | ||
| Total cash equivalents | 415.4 | |||
| Commercial paper | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | 24.5 | |||
| Total cash equivalents | $ 24.5 |
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- Definition Cash, Cash Equivalents, And Short Term Investments, Amortized Cost No definition available.
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of debt securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Cash, Cash Equivalents and Short-Term Investments - Narrative (Details) |
9 Months Ended | |||
|---|---|---|---|---|
|
Sep. 30, 2018
USD ($)
investment
|
Dec. 31, 2017
USD ($)
|
Sep. 30, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | $ 536,200,000 | $ 430,000,000 | $ 422,700,000 | $ 352,700,000 |
| Short-term investments | 502,900,000 | 0 | ||
| Cash in transit for credit and debit card transactions | $ 17,500,000 | 13,300,000 | ||
| Number of investments in unrealized loss positions | investment | 143 | |||
| Other-than-temporary impairment loss | $ 0 | |||
| Cash | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | 96,300,000 | 62,900,000 | ||
| Money market funds | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | $ 415,400,000 | $ 367,100,000 |
| X | ||||||||||
- Definition Debt Securities, Available-For-Sale, Unrealized Loss Position, Number Of Positions No definition available.
|
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- Definition Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale No definition available.
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- Definition Amount of investments in debt securities classified as available-for-sale, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount due the Entity as a result of customers utilizing point of sale debit or credit cards in exchange transactions with the entity which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. No definition available.
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Cash, Cash Equivalents and Short-Term Investments - Contractual Maturities of Short Term Investments (Details) $ in Millions |
Sep. 30, 2018
USD ($)
|
|---|---|
| Amortized Cost | |
| Due within one year | $ 321.4 |
| Due between one to three years | 181.7 |
| Total | 503.1 |
| Estimated Fair Value | |
| Due within one year | 321.2 |
| Due between one to three years | 181.7 |
| Total | $ 502.9 |
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- Definition Available For Sale Securities, Debt Maturities After One Through Four Years, Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Available For Sale Securities, Debt Maturities After One Through Four Years, Fair Value No definition available.
|
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- Definition Fair value of investment in available-for-sale debt securities with a single maturity date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of investment in available-for-sale debt securities with a single maturity date at cost, after adjustments, including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in the statement of income and fair value hedge accounting adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value of available-for-sale debt securities maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Fair Value Measurements (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | $ 536.2 | |
| Total short-term investments | 502.9 | |
| Corporate notes and obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 206.6 | |
| U.S. Treasury securities | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 183.2 | |
| Certificates of deposit | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 58.9 | |
| U.S. agency obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 36.4 | |
| Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 17.8 | |
| Money market funds | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 415.4 | |
| Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 24.5 | |
| Fair Value, Measurements, Recurring | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 502.9 | |
| Total cash equivalents and short-term investments | 942.8 | |
| Fair Value, Measurements, Recurring | Corporate notes and obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 206.6 | |
| Fair Value, Measurements, Recurring | U.S. Treasury securities | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 183.2 | |
| Fair Value, Measurements, Recurring | Certificates of deposit | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 58.9 | |
| Fair Value, Measurements, Recurring | U.S. agency obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 36.4 | |
| Fair Value, Measurements, Recurring | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 17.8 | |
| Fair Value, Measurements, Recurring | Money market funds | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 415.4 | |
| Fair Value, Measurements, Recurring | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 24.5 | |
| Fair Value, Measurements, Recurring | Cash equivalents | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 439.9 | |
| Fair Value, Measurements, Recurring | Level 1 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Total cash equivalents and short-term investments | 415.4 | |
| Fair Value, Measurements, Recurring | Level 1 | Corporate notes and obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury securities | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 1 | Certificates of deposit | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 1 | U.S. agency obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 1 | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 1 | Money market funds | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 415.4 | $ 367.1 |
| Fair Value, Measurements, Recurring | Level 1 | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 0.0 | |
| Fair Value, Measurements, Recurring | Level 1 | Cash equivalents | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 415.4 | |
| Fair Value, Measurements, Recurring | Level 2 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 502.9 | |
| Total cash equivalents and short-term investments | 527.4 | |
| Fair Value, Measurements, Recurring | Level 2 | Corporate notes and obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 206.6 | |
| Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury securities | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 183.2 | |
| Fair Value, Measurements, Recurring | Level 2 | Certificates of deposit | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 58.9 | |
| Fair Value, Measurements, Recurring | Level 2 | U.S. agency obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 36.4 | |
| Fair Value, Measurements, Recurring | Level 2 | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 17.8 | |
| Fair Value, Measurements, Recurring | Level 2 | Money market funds | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 0.0 | |
| Fair Value, Measurements, Recurring | Level 2 | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 24.5 | |
| Fair Value, Measurements, Recurring | Level 2 | Cash equivalents | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 24.5 | |
| Fair Value, Measurements, Recurring | Level 3 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Total cash equivalents and short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | Corporate notes and obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury securities | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | Certificates of deposit | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | U.S. agency obligations | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total short-term investments | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | Money market funds | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | Commercial paper | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | 0.0 | |
| Fair Value, Measurements, Recurring | Level 3 | Cash equivalents | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total cash equivalents | $ 0.0 |
| X | ||||||||||
- Definition Cash Equivalents, and Short-term Investments No definition available.
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- Definition Amount of debt securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | $ 892.7 | $ 846.7 |
| Accumulated depreciation and amortization | (596.8) | (504.8) |
| Property and equipment, net | 295.9 | 341.9 |
| Building | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 0.0 | 36.6 |
| Datacenter and other computer equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 741.7 | 663.1 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 23.3 | 21.2 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 120.9 | 118.6 |
| Construction in process | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | $ 6.8 | $ 7.2 |
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|
Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Dec. 31, 2017 |
|
| Property, Plant and Equipment [Line Items] | |||||
| Imputed financing lease obligation | $ 25.5 | $ 25.5 | |||
| Property and equipment, gross | 892.7 | 892.7 | $ 846.7 | ||
| Accumulated depreciation | 596.8 | 596.8 | 504.8 | ||
| Depreciation | 43.3 | $ 42.0 | 115.4 | $ 130.1 | |
| Building | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Gross building asset, derecognized | 36.6 | 36.6 | |||
| Accumulated depreciation, derecognized | 12.2 | 12.2 | |||
| Property and equipment, gross | 0.0 | 0.0 | 36.6 | ||
| Infrastructure Assets Held under Capital Leases | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment, gross | 368.3 | 368.3 | 417.9 | ||
| Accumulated depreciation | 219.1 | 219.1 | $ 259.0 | ||
| Other Current Liabilities | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Imputed financing lease obligation | 2.8 | 2.8 | |||
| Other Noncurrent Liabilities | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Imputed financing lease obligation | $ 22.7 | $ 22.7 | |||
| X | ||||||||||
- Definition Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Derecognized No definition available.
|
| X | ||||||||||
- Definition Imputed Financing Lease Obligation, De-recognized No definition available.
|
| X | ||||||||||
- Definition Property, Plant and Equipment, Gross Amount Derecognized No definition available.
|
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|
Goodwill (Details) - USD ($) |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| Goodwill impairment | $ 0 | $ 0 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Accrued and Other Current Liabilities (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Non-income taxes payable | $ 72.1 | $ 69.7 |
| Deferred rent | 45.7 | 14.6 |
| Accrued legal and other external fees | 28.9 | 21.3 |
| Financing obligations, current | 3.3 | 9.7 |
| Accrued infrastructure costs | 5.3 | 2.6 |
| Accrued property and equipment purchases | 1.4 | 1.8 |
| Income taxes payable | 0.1 | 0.4 |
| Other accrued and current liabilities | 6.4 | 9.7 |
| Total accrued and other current liabilities | $ 163.2 | $ 129.8 |
| X | ||||||||||
- Definition Accrued Infrastructure Costs, Current No definition available.
|
| X | ||||||||||
- Definition Accrued Liabilities and Other Liabilities, Current No definition available.
|
| X | ||||||||||
- Definition Accrued Property, Plant And Equipment, Current No definition available.
|
| X | ||||||||||
- Definition Financing Obligations, Current No definition available.
|
| X | ||||||||||
- Definition Other Accrued Liabilities and Other Liabilities, Current No definition available.
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
Revolving Credit Facility (Details) - Credit And Guarantee Agreement - Line of Credit - USD ($) |
Apr. 30, 2017 |
Sep. 30, 2018 |
Feb. 28, 2018 |
|---|---|---|---|
| Line of Credit Facility [Line Items] | |||
| Aggregate letters of credit outstanding amount | $ 71,800,000 | ||
| Revolving Credit Facility | |||
| Line of Credit Facility [Line Items] | |||
| Line of credit facility, maximum borrowing capacity | $ 600,000,000.0 | $ 725,000,000.0 | |
| Debt issuance fees | $ 2,600,000 | 400,000 | |
| Debt instrument, term | 5 years | ||
| Line of credit facility, accordion feature, increase limit | 275,000,000.0 | ||
| Unused capacity, commitment fee percentage | 0.20% | ||
| Covenant terms, minimum liquidity balance | $ 100,000,000.0 | ||
| Remaining borrowing capacity | $ 653,200,000 | ||
| Revolving Credit Facility | LIBOR | |||
| Line of Credit Facility [Line Items] | |||
| Basis spread on variable rate | 1.50% | ||
| Revolving Credit Facility | Base Rate | |||
| Line of Credit Facility [Line Items] | |||
| Basis spread on variable rate | 0.50% | ||
| Letter of Credit | |||
| Line of Credit Facility [Line Items] | |||
| Line of credit facility, maximum borrowing capacity | $ 187,500,000.0 | ||
| Commitment fee percentage | 1.50% | ||
| Fronting fee | 0.125% |
| X | ||||||||||
- Definition Line of Credit Facility, Accordion Feature, Increase Limit No definition available.
|
| X | ||||||||||
- Definition Line Of Credit Facility, Covenant Terms, Liquidity Ratio Required, Minimum No definition available.
|
| X | ||||||||||
- Definition Line Of Credit Facility, Fronting Fee Percentage No definition available.
|
| X | ||||||||||
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
|
| X | ||||||||||
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
|
| X | ||||||||||
- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
May 31, 2018 |
Dec. 31, 2017 |
|
| Loss Contingencies [Line Items] | ||||||
| Gross rent expense | $ 21.4 | $ 19.0 | $ 64.4 | $ 51.4 | ||
| Sublease income | $ 2.8 | $ 3.4 | $ 9.4 | $ 7.2 | ||
| Operating lease, minimum obligation | $ 831.6 | |||||
| Tenant improvement reimbursements | 75.0 | |||||
| Operating leases, future minimum payments no longer obligated to pay | $ 192.4 | |||||
| Letter of credit | ||||||
| Loss Contingencies [Line Items] | ||||||
| Letter of credit supporting obligations | $ 34.2 | |||||
| X | ||||||||||
- Definition Operating Lease, Minimum Obligations No definition available.
|
| X | ||||||||||
- Definition Operating Leases, Future Minimum Payments, No Longer Obligated To Pay No definition available.
|
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of sublease income excluding finance and operating lease expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
Commitments and Contingencies - Schedule of Future Minimum Payments (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
|||
|---|---|---|---|---|---|
| Capital lease commitments | |||||
| Remainder of 2018 | $ 27.1 | ||||
| 2019 | 74.5 | ||||
| 2020 | 38.0 | ||||
| 2021 | 23.0 | ||||
| 2022 | 10.6 | ||||
| Thereafter | 0.7 | ||||
| Future minimum payments | 173.9 | ||||
| Less interest and taxes | (11.0) | ||||
| Less current portion of the present value of minimum lease payments | [1] | (80.5) | $ (102.7) | ||
| Capital lease obligations, net of current portion | [1] | 82.4 | $ 71.6 | ||
| Operating lease commitments | |||||
| Remainder of 2018 | 24.5 | ||||
| 2019 | 94.1 | ||||
| 2020 | 103.3 | ||||
| 2021 | 95.7 | ||||
| 2022 | 89.0 | ||||
| Thereafter | 711.7 | ||||
| Future minimum payments | 1,118.3 | ||||
| Other commitments | |||||
| Remainder of 2018 | 16.9 | ||||
| 2019 | 54.9 | ||||
| 2020 | 37.0 | ||||
| 2021 | 1.9 | ||||
| 2022 | 0.0 | ||||
| Thereafter | 0.3 | ||||
| Future minimum payments | 111.0 | ||||
| Rent payments from sub-tenants | $ 44.2 | ||||
| |||||
| X | ||||||||||
- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount necessary to reduce net minimum lease payments to present value for capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of minimum lease payments for capital leases due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Contractually required future rental payments receivable on noncancelable subleasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|
| X | ||||||||||
- Definition Minimum amount of other commitment maturing after the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|
| X | ||||||||||
- Definition Minimum amount of other commitment maturing in the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|
| X | ||||||||||
- Definition Minimum amount of other commitment maturing in the fourth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|
| X | ||||||||||
- Definition Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|
| X | ||||||||||
- Definition Minimum amount of other commitment maturing in the third fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of other commitments maturing in the remainder of the fiscal year following the latest fiscal year ended. No definition available.
|
Stockholders' Equity - Common Stock, Convertible Preferred Stock, Preferred Stock (Details) |
1 Months Ended | 3 Months Ended | 9 Months Ended | |
|---|---|---|---|---|
|
Mar. 26, 2018
shares
|
Dec. 31, 2017
shares
|
Sep. 30, 2018
$ / shares
shares
|
Sep. 30, 2018
vote
$ / shares
shares
|
|
| Class of Stock [Line Items] | ||||
| Preferred stock, shares authorized (in shares) | 240,000,000.0 | 240,000,000.0 | ||
| Restricted Stock | ||||
| Class of Stock [Line Items] | ||||
| Shares granted (in shares) | 13,300,000 | |||
| Co-Founder Grants | Restricted Stock | ||||
| Class of Stock [Line Items] | ||||
| Shares granted (in shares) | 14,700,000 | |||
| Class A common stock | ||||
| Class of Stock [Line Items] | ||||
| Votes per share | vote | 1 | |||
| Common stock, shares authorized (in shares) | 2,400,000,000.0 | 2,400,000,000.0 | ||
| Common stock, par value (in dollars per share) | $ / shares | $ 0.00001 | $ 0.00001 | ||
| Common stock, shares issued (in shares) | 8,900,000 | 165,400,000 | 165,400,000 | |
| Common stock, shares outstanding (in shares) | 8,900,000 | 165,400,000 | 165,400,000 | |
| Shares issued in conversion (in shares) | 61,300,000 | |||
| Class A common stock | Conversion of Convertible Preferred Stock to Class A Common Stock | ||||
| Class of Stock [Line Items] | ||||
| Shares issued in conversion (in shares) | 258,620 | |||
| Class B common stock | ||||
| Class of Stock [Line Items] | ||||
| Votes per share | vote | 10 | |||
| Shares converted in conversion (in shares) | 61,300,000 | |||
| Common stock, shares authorized (in shares) | 475,000,000.0 | 475,000,000.0 | ||
| Common stock, par value (in dollars per share) | $ / shares | $ 0.00001 | $ 0.00001 | ||
| Common stock, shares issued (in shares) | 187,900,000 | 240,800,000 | 240,800,000 | |
| Common stock, shares outstanding (in shares) | 187,900,000 | 240,800,000 | 240,800,000 | |
| Class B common stock | Conversion of Convertible Preferred Stock to Class B Common Stock | ||||
| Class of Stock [Line Items] | ||||
| Shares issued in conversion (in shares) | 147,310,563 | |||
| Class C common stock | ||||
| Class of Stock [Line Items] | ||||
| Votes per share | vote | 0 | |||
| Common stock, shares authorized (in shares) | 800,000,000.0 | 800,000,000.0 | ||
| Common stock, par value (in dollars per share) | $ / shares | $ 0.00001 | $ 0.00001 | ||
| Common stock, shares issued (in shares) | 0 | 0 | 0 | |
| Common stock, shares outstanding (in shares) | 0 | 0 | 0 | |
| Convertible preferred stock | Conversion of Convertible Preferred Stock to Class B Common Stock | ||||
| Class of Stock [Line Items] | ||||
| Shares converted in conversion (in shares) | 147,310,563 | |||
| Convertible preferred stock | Conversion of Convertible Preferred Stock to Class A Common Stock | ||||
| Class of Stock [Line Items] | ||||
| Shares converted in conversion (in shares) | 258,620 |
| X | ||||||||||
- Definition Common Stock, Vote Equivalent No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Stockholders' Equity - Equity Incentive Plans (Details) - USD ($) $ in Millions |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2018 |
Mar. 22, 2018 |
Dec. 31, 2017 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Number of shares reserved for future issuance (in shares) | 41,400,000 | ||
| Shares issued and outstanding (in shares) | 3,300,000 | 5,000,000 | |
| 2018 Plan | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Expiration period | 10 years | ||
| Vesting period | 4 years | ||
| Options granted (in shares) | 0 | ||
| Shares issued and outstanding (in shares) | 29,300,000 | ||
| Shares available for grant (in shares) | 57,500,000 | ||
| Remaining unamortized stock-based compensation | $ 421.2 | ||
| Unamortized stock-based compensation, requisite service period | 2 years 9 months 24 days | ||
| 2018 Plan | Class A common stock | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Number of shares reserved for future issuance (in shares) | 41,400,000 | ||
| 2018 Plan | Employee Stock Option | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Expiration period | 10 years |
| X | ||||||||||
- Definition Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Stockholders' Equity - Schedule of Stock Option and Restricted Stock Activity (Details) - $ / shares shares in Millions |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2018 |
Dec. 31, 2017 |
Sep. 30, 2018 |
|
| Number of shares available for issuance under the Plans | |||
| Beginning balance (in shares) | 9.0 | ||
| Reserved for issuance under the 2018 Plan (in shares) | 41.4 | ||
| Additional shares authorized (in shares) | 1.3 | ||
| Options and RSUs canceled (in shares) | 4.6 | ||
| Shares repurchased for tax withholdings on release of restricted stock (unaudited) (in shares) | 14.5 | ||
| Restricted stock granted (in shares) | (13.3) | ||
| Ending balance (in shares) | 57.5 | 9.0 | |
| Options Outstanding, Number of shares outstanding under the Plans | |||
| Beginning balance (in shares) | 5.0 | ||
| Options exercised (in shares) | (1.7) | ||
| Ending balance (in shares) | 3.3 | 5.0 | |
| Vested during period (in shares) | 3.3 | ||
| Unvested at end of period (in shares) | 0.0 | ||
| Options Outstanding, Weighted- average exercise price per share | |||
| Beginning balance (in dollars per share) | $ 10.52 | ||
| Options exercised (in dollars per share) | 6.48 | ||
| Ending balance (in dollars per share) | 12.59 | $ 10.52 | |
| Vested during period (in dollars per share) | $ 12.46 | ||
| Unvested at end of period (in dollars per shares) | $ 0.00 | ||
| Options Outstanding, Weighted- average remaining contractual term (In years) | |||
| Weighted-average contractual term | 2 years 2 months 12 days | 5 years 6 months | |
| Vested during period | 2 years 2 months 12 days | ||
| Restricted Stock | |||
| Restricted Stock Outstanding, Number of Plan shares outstanding | |||
| Beginning balance (in shares) | 54.9 | ||
| RSUs released (in shares) | (37.6) | ||
| RSUs canceled (in shares) | (4.6) | ||
| Restricted stock granted (in shares) | 13.3 | ||
| Ending balance (in shares) | 26.0 | 54.9 | |
| Unvested at end of period (in shares) | 54.9 | 54.9 | 26.0 |
| Restricted Stock Outstanding, Weighted- average grant date fair value per share | |||
| Beginning balance (in dollars per share) | $ 15.60 | ||
| RSUs released (in dollars per share) | 15.26 | ||
| RSUs canceled (in dollars per share) | 16.70 | ||
| Restricted stock granted (in dollars per share) | 19.25 | ||
| Ending balance (in dollars per share) | 17.80 | $ 15.60 | |
| Unvested at end of period (in dollars per share) | $ 15.60 | $ 15.60 | $ 17.80 |
| X | ||||||||||
- Definition Share-Based Compensation Arrangement By Share-based Payment Award, Decrease In Number of Shares Authorized From Stock Granted No definition available.
|
| X | ||||||||||
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Options, Vested, Weighted Average Remaining Contractual Term No definition available.
|
| X | ||||||||||
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Shares Available For Issuance [Roll Forward] No definition available.
|
| X | ||||||||||
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Shares Canceled No definition available.
|
| X | ||||||||||
- Definition Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. No definition available.
|
| X | ||||||||||
- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
- Definition Number of non-vested options outstanding. No definition available.
|
| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options outstanding. No definition available.
|
| X | ||||||||||
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of options vested. No definition available.
|
| X | ||||||||||
- Definition Weighted average grant-date fair value of options vested. No definition available.
|
| X | ||||||||||
- Definition For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer. No definition available.
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
Stockholders' Equity - Schedule of Pre-Tax Intrinsic Value (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Stockholders' Equity Note [Abstract] | ||||
| Intrinsic value of options exercised | $ 32.0 | $ 0.0 | $ 34.0 | $ 1.0 |
| X | ||||||||||
- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
Stockholders' Equity - Co-Founder Grants (Details) $ / shares in Units, shares in Millions, $ in Millions |
1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
|---|---|---|---|---|
|
Dec. 31, 2017
USD ($)
tranche
$ / shares
shares
|
Sep. 30, 2018
USD ($)
$ / shares
|
Sep. 30, 2018
USD ($)
$ / shares
shares
|
Dec. 31, 2017
USD ($)
tranche
$ / shares
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Weighted average grant date fair value (in dollars per share) | $ / shares | $ 0.00 | $ 0.00 | ||
| Restricted Stock | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Shares granted (in shares) | 13.3 | |||
| Co-Founder Grants | Restricted Stock | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Shares granted (in shares) | 14.7 | |||
| Expiration period | 10 years | |||
| Number of tranches | tranche | 9 | 9 | ||
| Weighted average grant date fair value (in dollars per share) | $ / shares | $ 10.60 | $ 10.60 | ||
| Award requisite period | 5 years 2 months 12 days | |||
| Remaining unamortized stock-based compensation | $ | $ 156.2 | $ 128.1 | $ 128.1 | $ 156.2 |
| Stock-based compensation related to the Co-Founder Grants | $ | $ 8.8 | $ 28.1 | ||
| Co-Founder Grants | Restricted Stock | Minimum | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Award requisite period | 2 years 10 months 25 days | 2 years 10 months 25 days | ||
| Co-Founder Grants | Restricted Stock | Maximum | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Award requisite period | 6 years 10 months 25 days | 6 years 10 months 25 days | ||
| Co-Founder Grants | Restricted Stock | Tranche One | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Vesting period | 4 years | |||
| Co-Founder Grants | Restricted Stock | Tranche One | Maximum | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Percentage vested maximum | 20.00% | |||
| Co-Founder Grants | Chief Executive Officer | Restricted Stock | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Shares granted (in shares) | 10.3 | |||
| Co-Founder Grants | Director | Restricted Stock | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Shares granted (in shares) | 4.4 |
| X | ||||||||||
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Tranches No definition available.
|
| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Percentage of vesting of share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options outstanding. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Class of Stock [Line Items] | ||||
| Net loss attributable to common stockholders | $ (5.8) | $ (14.1) | $ (475.4) | $ (74.0) |
| Weighted-average number of common shares outstanding used in computing basic and diluted net loss per common share (in shares) | 403.9 | 197.2 | 342.0 | 195.5 |
| Net loss per common share, basic and diluted (in dollars per share) | $ (0.01) | $ (0.07) | $ (1.39) | $ (0.38) |
| Class A | ||||
| Class of Stock [Line Items] | ||||
| Net loss attributable to common stockholders | $ (1.9) | $ (0.5) | $ (105.5) | $ (2.3) |
| Weighted-average number of common shares outstanding used in computing basic and diluted net loss per common share (in shares) | 133.2 | 6.6 | 75.9 | 6.1 |
| Net loss per common share, basic and diluted (in dollars per share) | $ (0.01) | $ (0.07) | $ (1.39) | $ (0.38) |
| Class B | ||||
| Class of Stock [Line Items] | ||||
| Net loss attributable to common stockholders | $ (3.9) | $ (13.6) | $ (369.9) | $ (71.7) |
| Weighted-average number of common shares outstanding used in computing basic and diluted net loss per common share (in shares) | 270.7 | 190.6 | 266.1 | 189.4 |
| Net loss per common share, basic and diluted (in dollars per share) | $ (0.01) | $ (0.07) | $ (1.39) | $ (0.38) |
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Net Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 47.7 | 206.2 | 57.5 | 205.0 |
| Convertible preferred stock | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 0.0 | 147.6 | 0.0 | 147.6 |
| Restricted stock units | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 28.7 | 53.5 | 38.0 | 52.1 |
| Options to purchase shares of common stock | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 4.3 | 5.0 | 4.7 | 5.1 |
| Co-Founder Grants | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 14.7 | 0.0 | 14.7 | 0.0 |
| Shares subject to repurchase from early-exercised options and unvested restricted stock | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 0.0 | 0.1 | 0.1 | 0.2 |
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
Income Taxes (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Dec. 31, 2017 |
|
| Income Tax Disclosure [Abstract] | |||||
| Income tax expense (benefit) | $ (200,000) | $ 500,000 | $ 2,700,000 | $ 1,200,000 | |
| Increase in unrecognized tax benefits | 2,900,000 | 19,100,000 | |||
| Unrecognized tax benefits that would impact effective tax rate | $ 800,000 | $ 1,400,000 | |||
| Estimated reduction in deferred tax assets due to remeasurement | $ 63,100,000 | ||||
| Estimated tax benefit from repealed corporate AMT | 1,400,000 | ||||
| Estimated transition tax inclusion | $ 0 | ||||
| X | ||||||||||
- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Alternative Minimum Tax, Provisional Income Tax Benefit No definition available.
|
| X | ||||||||||
- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense No definition available.
|
| X | ||||||||||
- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Income Tax Expense No definition available.
|
| X | ||||||||||
- Definition Unrecognized Tax Benefits that Would Impact Effective Tax Rate During The Period No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
Related Party Transactions (Details) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2018
USD ($)
|
Sep. 30, 2017
USD ($)
|
Jun. 30, 2017
USD ($)
|
Sep. 30, 2018
USD ($)
|
Sep. 30, 2017
USD ($)
|
Dec. 31, 2016
shareholder
|
|||
| Controlling Shareholders | Dropbox Charitable Foundation | ||||||||
| Related Party Transaction [Line Items] | ||||||||
| Number of controlling shareholders in related party transaction | shareholder | 2 | |||||||
| Payments to related party | $ 0 | $ 400,000 | $ 0 | $ 800,000 | ||||
| General and administrative expense from donated shares | $ 9,400,000 | |||||||
| Affiliated Entity | Infrastructure Equipment Under Capital Leases and Commercial Products and Services | ||||||||
| Related Party Transaction [Line Items] | ||||||||
| Payments to related party | [1] | $ 5,500,000 | ||||||
| ||||||||
| X | ||||||||||
- Definition Related Party Transaction, Number Of Controlling Shareholders No definition available.
|
| X | ||||||||||
- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party. No definition available.
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Geographic Areas (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Dec. 31, 2017 |
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| Segment Reporting Information [Line Items] | |||||
| Property and equipment, net | $ 295.9 | $ 295.9 | $ 341.9 | ||
| Total revenue | 360.3 | $ 286.7 | 1,015.8 | $ 801.3 | |
| United States | |||||
| Segment Reporting Information [Line Items] | |||||
| Property and equipment, net | 278.1 | 278.1 | 323.7 | ||
| Total revenue | 182.6 | 146.1 | 516.5 | 417.8 | |
| International | |||||
| Segment Reporting Information [Line Items] | |||||
| Property and equipment, net | 17.8 | 17.8 | $ 18.2 | ||
| Total revenue | $ 177.7 | $ 140.6 | $ 499.3 | $ 383.5 | |
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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All Reports