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Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] Other assets Increase (Decrease) in Other Operating Assets 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Two Adjustment to Compensation, Amount Adjustment to Compensation Amount Cost of revenue Cost of Sales [Member] Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Lease Contractual Term [Axis] Lease Contractual Term [Axis] Auditor Name Auditor Name Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule of Fair Value Assets Measured On Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Internal use software Internal Use 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to be Paid, Year Five Non-PEO NEO Non-PEO NEO [Member] Goodwill and intangible asset impairment Goodwill and Intangible Asset Impairment Adjustment to Compensation: Adjustment to Compensation [Axis] Research credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards, Research Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Debt Instrument [Line Items] Debt Instrument [Line Items] Total cash, cash equivalents, and short term investments, before unrealized gains (losses) on investments Cash, Cash Equivalents, And Short Term Investments, Amortized Cost Cash, Cash Equivalents, And Short Term Investments, Amortized Cost Scenario [Axis] Scenario [Axis] Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares) Weighted-average number of common shares outstanding used in computing basic net income per share (in shares) Weighted Average Number of Shares Outstanding, Basic Unamortized issuance costs Unamortized Debt Issuance Expense Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Andrew Houston Trading Arrangement, Class B Common Stock [Member] Andrew Houston Trading Arrangement, Class B Common Stock Unused capacity, commitment fee (percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Statement [Line Items] Statement [Line Items] Deferred: Deferred Federal, State and Local, Tax Expense (Benefit) [Abstract] Transaction costs paid by Dropbox on behalf of FormSwift Other Payments to Acquire Businesses Concentration Risk [Table] Concentration Risk [Table] Schedule of Convertible Debt Schedule of Debt [Table Text Block] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis]