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Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Acquisition Intangible Assets And Goodwill [Table] Acquisition Intangible Assets And Goodwill [Table] Acquisition, intangible assets and goodwill. Other Commitments [Table] Other Commitments [Table] Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Net cash (used in) provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Schedule of Stock Option Activity and Weighted Average Exercise Prices Share-Based Payment Arrangement, Option, Activity [Table Text Block] Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Weighted average shares used in calculating basic net income per share (in shares) Weighted average shares used in calculating net income (loss) per share, basic (in shares) Number of shares used in basic calculation (in shares) Weighted Average Number of Shares Outstanding, Basic Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Cost of revenue Cost of Product and Service Sold Schedule of Calculation of Basic and Diluted Net Income (Loss) Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Number of voting rights entitled to stockholders per share (in dollars per share) Number Of Voting Rights Entitled To Stockholders Per Share Number of voting rights entitled to stockholders per share. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Rent expense Operating Lease, Expense Cloud hosting and infrastructure expenses Cloud Hosting And Infrastructure Expenses Cloud Hosting And Infrastructure Expenses Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of issuance costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Accounts charged of accounts receivable deemed uncollectible against the allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Writeoff Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, issued (in shares) Common Stock, Shares, Issued Weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Acquisitions, Intangible Assets and Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Proceeds from settlement of capped calls related to 2025 Convertible Senior Notes Proceeds From Settlement Of Capped Calls Related To Convertible Senior Notes Proceeds From Settlement Of Capped Calls Related To Convertible Senior Notes Entity Public Float Entity Public Float Schedule of Changes in Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Insider Trading Arrangements [Line Items] Netherlands NETHERLANDS Security Exchange Name Security Exchange Name Options forfeited or expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Foreign Income Tax Paid, Foreign, after Refund Received Other Effective Income Tax Rate Reconciliation, Cross-Border, Other, Percent Total liabilities Liabilities Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Increase of current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Operating lease, non-cash lease expense Operating Lease Non Cash Lease Expense Operating lease non-cash lease expense. Long-Lived Assets Long-Lived Assets [Member] Long-Lived Assets Operating expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Accrued expenses and other current liabilities Total accrued expenses and other current liabilities Other Liabilities, Current Statement [Line Items] Statement [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Unamortized debt issuance costs Unamortized Debt Issuance Expense Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Convertible Senior Notes Due 2025 and 2029 Convertible Senior Notes Due 2025 and 2029 [Member] Convertible Senior Notes Due 2025 and 2029 2029 Notes 0.00% Convertible Senior Notes Due 2029 0.00% Convertible Senior Notes Due 2029 [Member] 0.00% Convertible Senior Notes Due 2029 Cash and cash equivalents Cash and Cash Equivalent Schedule of Activity for Unvested RSUs Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Debt instrument, trading days Debt Instrument, Convertible, Threshold Trading Days Reallocation of undistributed income as a result of conversion of Class B to Class A shares Reallocation Of Undistributed Income Loss Result Of Conversion Of Common Stock Reallocation of undistributed income (loss) result of conversion of common stock. Class A and Class B Common Stock Common Stock [Member] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Fair Value Marketable Securities: Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate debt securities Corporate debt securities Corporate Debt Securities [Member] NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation