Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Leasehold improvements Leasehold Improvements [Member] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Net income Net income Net Income (Loss) Attributable to Parent Entity Emerging Growth Company Entity Emerging Growth Company Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Income Statement Location Income Statement Location [Axis] Range [Domain] Statistical Measurement [Domain] Entity Address, Address Line One Entity Address, Address Line One Equity Method Equity Method Investments, Fair Value Disclosure Europe, Middle East, and Africa (“EMEA”) EMEA [Member] Cancelled/forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Revenue from Contract with Customer [Abstract] Additional paid-in capital Additional Paid in Capital, Common Stock Entity Filer Category Entity Filer Category Other assets, noncurrent Other assets, noncurrent Other Assets, Noncurrent Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Net (decrease) increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Stock-based compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition Cancelled/forfeited/expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Certificates of deposit Certificates of Deposit [Member] Summary of Marketable Securities Debt Securities, Available-for-sale [Table Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Organization, Consolidation and Presentation of Financial Statements [Abstract] Intangible assets, other than goodwill Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Acquired finite-lived intangible assets, weighted average useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Antidilutive securities excluded from computation of earnings per share, amount (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Revenue recognized included in deferred revenue Contract with Customer, Liability, Revenue Recognized Research and development Research and Development Expense [Member] Sale of Stock Sale of Stock [Axis] Business Combination and Asset Acquisition [Abstract] Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Business Acquisition [Axis] Business Acquisition [Axis] Aggregate legal settlement charge Loss Contingency, Loss in Period Agency bonds Municipal Bonds [Member] Maturities of marketable securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Unrealized (loss) gain on available-for-sale marketable securities, net of tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Equity Award Award Type [Domain] Assets Assets [Abstract] Service period Business Combination, Milestone Payment, Service Period Business Combination, Milestone Payment, Service Period Keybase Keybase [Member] Keybase Weighted- Average Remaining Contractual Life (Years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Outstanding stock options, vested and exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Summary of Contractual Maturities of Marketable Securities Investments Classified by Contractual Maturity Date [Table Text Block] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Percentage of revenue Concentration Risk, Percentage Preferred stock, $0.001 par value per share, 200,000,000 shares authorized as of October 31, 2021 and January 31, 2021; zero shares issued and outstanding as of October 31, 2021 and January 31, 2021 Preferred Stock, Value, Issued Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Entity Address, City or Town Entity Address, City or Town Retained Earnings Retained Earnings [Member] Initial public offering IPO [Member] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Privately held debt securities included in strategic investments Privately Held Debt Securities [Member] Privately Held Debt Securities Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Luck-up agreement term Equity Securities, FV-NI, Lock Up Agreement, Term Equity Securities, FV-NI, Lock Up Agreement, Term Accounts receivable Increase (Decrease) in Accounts Receivable Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Commitments and Contingencies Disclosure [Abstract] Schedule of Other Liabilities Non Current Other Noncurrent Liabilities [Table Text Block] Amortization on marketable securities Equity Method Investment, Realized Gain (Loss) on Remeasurement Equity Method Investment, Realized Gain (Loss) on Remeasurement Entity Interactive Data Current Entity Interactive Data Current Publicly held equity securities included in strategic investments Equity Securities, FV-NI Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Basic (in dollars per share) Net income per share attributable to common stockholders, basic (in dollars per share) Earnings Per Share, Basic Number of derivative lawsuits Loss Contingency, Pending Claims, Number Revenue Recognition Revenue from Contract with Customer [Text Block] Other Other Liabilities Other Noncurrent Other liabilities, other, noncurrent. Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Document Type Document Type Purchase of strategic investments Payments to Acquire Equity Securities, FV-NI Prepaid expenses Prepaid Expense, Current Summary Disaggregation of Revenue by Region Disaggregation of Revenue [Table Text Block] Geographic Concentration Risk Geographic Concentration Risk [Member] Unvested RSUs Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Denominator: Earnings Per Share, Diluted [Abstract] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Entity Current Reporting Status Entity Current Reporting Status Commercial paper Commercial Paper [Member] Deferred contract acquisition costs, noncurrent Capitalized Contract Cost, Net, Noncurrent Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Provision for accounts receivable allowances Accounts Receivable, Credit Loss Expense (Reversal) Financial Assets: Assets, Fair Value Disclosure [Abstract] Total financial assets Assets, Fair Value Disclosure Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Other Other Operating Activities, Cash Flow Statement Document Transition Report Document Transition Report Income Tax Disclosure [Abstract] Software Software Development [Member] Total liabilities and stockholders’ equity Liabilities and Equity Accounts Receivable, after Allowance for Credit Loss, Total Accounts Receivable, after Allowance for Credit Loss Investments, Debt and Equity Securities [Abstract] Americas Americas [Member] Deferred revenue, current Contract with Customer, Liability, Current Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price U.S. government agency securities US Government Agencies Debt Securities [Member] Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Accounts payable Increase (Decrease) in Accounts Payable Net Income Per Share Attributable to Common Stockholders Earnings Per Share [Text Block] Operating expenses: Operating Expenses [Abstract] Gain on strategic investment Equity Securities, FV-NI, Gain (Loss) Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Issuance of common stock upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Held For Charitable Contributions Held For Charitable Contributions [Member] Held For Charitable Contributions Minimum Minimum [Member] Gross profit Gross Profit Cancelled/forfeited/expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Trading Symbol Trading Symbol Business acquisition, percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Reallocation of net income attributable to common stockholders Reallocation Of Net Income Loss Available To Common Stockholders Diluted Reallocation of net income loss available to common stockholders diluted. Accrued compensation and benefits Accrued Employee Benefits, Current Current liabilities: Liabilities, Current [Abstract] Restricted cash, noncurrent included in other assets, noncurrent Restricted Cash and Cash Equivalents, Noncurrent Operating lease liabilities, net Increase (Decrease) in Operating Lease Liability General and administrative General and Administrative Expense Cash paid for acquisition, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Schedule of Provision for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Weighted average exercise price, vested and exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Summary of Strategic Investments Investment Holdings, Schedule of Investments [Table Text Block] Weighted- Average Remaining Contractual Life (Years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Certificate of deposit included in prepaid expenses and other current assets Prepaid Expenses And Other Current Assets Fair Value Disclosure Prepaid expenses and other current assets, fair value disclosure. Common stock, $0.001 par value per share, 2,000,000,000 Class A shares authorized as of October 31, 2021 and January 31, 2021; 242,019,615 and 215,737,924 shares issued and outstanding as of October 31, 2021 and January 31, 2021, respectively; 300,000,000 Class B shares authorized as of October 31, 2021 and January 31, 2021; 55,917,342 and 77,811,299 shares issued and outstanding as of October 31, 2021 and January 31, 2021, respectively Common Stock, Value, Issued Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Unrecognized stock-based compensation excepted to be recognized over a weighted-average period Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Commitments and contingencies (Note 7) Commitments and Contingencies Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Accounts receivable, allowances Accounts Receivable, Allowance for Credit Loss, Current Business Combinations Business Combination Disclosure [Text Block] Billed consideration Billed Revenues [Member] Other Commitments [Table] Other Commitments [Table] Schedule of Other Noncurrent Assets Schedule of Other Assets, Noncurrent [Table Text Block] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Document Period End Date Document Period End Date Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Class of Stock Class of Stock [Axis] Entity Registrant Name Entity Registrant Name Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Financial Instrument [Axis] Financial Instrument [Axis] Accrued expenses Accrued Liabilities, Current Revenue Revenue from Contract with Customer, Excluding Assessed Tax Stock options Share-based Payment Arrangement, Option [Member] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Fair Value Reported Value Measurement [Member] Common Stock Common Stock [Member] Income from operations Operating Income (Loss) Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Operating lease liabilities, current Operating Lease, Liability, Current Due in one to five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Property, Plant and Equipment [Abstract] Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Purchases of strategic investments Payments to Acquire Other Investments Additional Paid-In Capital Additional Paid-in Capital [Member] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Violation Of Securities Act Section 10(b), 20(a), and Rule 10b-5 Violation Of Securities Act Section 10(b), 20(a), and Rule 10b-5 [Member] Violation Of Securities Act Section 10(b), 20(a), and Rule 10b-5 Holdback agreements related to employees Holdback Agreements Related to Employees Holdback Agreements Related to Employees Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Purchases of marketable securities Payments to Acquire Debt Securities, Available-for-sale Summary of Restricted Stock Units (RSUs) Activity Under Equity Incentive Plan Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Equity securities Equity Securities, FV-NI, Noncurrent Other Payments for (Proceeds from) Other Investing Activities Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Other Other Liabilities, Current Maximum Maximum [Member] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Total liabilities Liabilities Unbilled consideration Unbilled Revenues [Member] Award Type Award Type [Axis] Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Options outstanding, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Total stockholders’ equity Beginning balance Ending balance Stockholders' Equity Attributable to Parent Billing Status, Type Billing Status, Type [Axis] Common stock, issued (in shares) Common Stock, Shares, Issued Preferred stock, issued (in shares) Preferred Stock, Shares Issued Restricted cash, current included in prepaid expenses and other current assets Restricted Cash and Cash Equivalents, Current Options outstanding, aggregate intrinsic value, vested and exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Other Other Assets, Miscellaneous, Noncurrent Accounts receivable, gross Accounts Receivable, before Allowance for Credit Loss Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Aggregate Intrinsic Value Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Operating lease liabilities, noncurrent Operating Lease, Liability, Noncurrent Fair Value, Measurement Frequency Measurement Frequency [Domain] Proceeds from employee equity transactions (remitted) to be remitted to employees and tax authorities, net Increase (Decrease) in Employee Related Liabilities Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] City Area Code City Area Code Retained earnings Retained Earnings (Accumulated Deficit) RSUs Unvested RSUs Restricted Stock Units (RSUs) [Member] Treasury bills US Treasury Bill Securities [Member] Statement of Stockholders' Equity [Abstract] Issuance of common stock for employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Business Acquisition [Line Items] Business Acquisition [Line Items] Gains on strategic investments, net Gain (Loss) on Investments Treasury bills US Treasury Securities [Member] Equity investment Equity Method Investments Reconciliation of cash, cash equivalents, and restricted cash within the condensed consolidated balance sheets to the amounts shown in the condensed consolidated statements of cash flows above: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Income Statement [Abstract] Amendment Flag Amendment Flag Proceeds from exercise of stock options Proceeds from Stock Options Exercised Provision for credit losses Accounts Receivable, Credit Losses Expense (Reversal), Current Accounts Receivable, Credit Losses Expense (Reversal), Current Provision for (benefit from) income taxes Income Tax Expense (Benefit) Accounts receivable, net of allowances of $34,078 and $36,844 as of October 31, 2021 and January 31, 2021, respectively Accounts Receivable, after Allowance for Credit Loss, Current Asia Pacific (“APAC”) Asia Pacific [Member] Equity Components Equity Components [Axis] Fair Value Disclosures [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total current assets Assets, Current Sales and marketing Selling and Marketing Expense [Member] Sale of Stock Sale of Stock [Domain] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Cancelled/forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Receivables Billing Status Receivables Billing Status [Domain] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Certificates of deposit included in other assets, noncurrent Other Assets, Fair Value Disclosure Entity File Number Entity File Number Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Statement of Financial Position [Abstract] Undistributed earnings attributable to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Unrecognized stock-based compensation expenses related to outstanding unvested stock options Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Property, Plant and Equipment, Type Long-Lived Tangible Asset [Domain] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Entity Small Business Entity Small Business Computer and office equipment Computer And Office Equipment [Member] Computer and office equipment. Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Unrecognized stock-based compensation expenses Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Equity Component Equity Component [Domain] Deferred contract acquisition costs Increase Decrease In Deferred Contract Acquisition Costs Increase decrease in Deferred contract acquisition costs. Sales and marketing Selling and Marketing Expense Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Statement [Line Items] Statement [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Weighted- Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Issuance of common stock upon release of restricted stock units Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Summary of Stock-based Compensation Expense by Line Item Share-based Payment Arrangement, Cost by Plan [Table Text Block] Marketable securities Estimated Fair Value Total Debt Securities, Available-for-sale Amortization of deferred contract acquisition costs Amortization of Acquisition Costs Entity Address, State or Province Entity Address, State or Province Income before provision for (benefit from) income taxes Income before provision for (benefit from) income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Property, Plant and Equipment, Type Long-Lived Tangible Asset [Axis] Document Information [Table] Document Information [Table] Deferred revenue, noncurrent Contract with Customer, Liability, Noncurrent Less: undistributed earnings attributable to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Balance Sheet Components [Abstract] Balance Sheet Components. U.S. Privacy Class Actions U.S. Privacy Class Actions [Member] U.S. Privacy Class Actions Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of Computation of Basic and Diluted Net Income Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Entity Shell Company Entity Shell Company Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Local Phone Number Local Phone Number Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Number of equity incentive plans Share-Based Payment Arrangement, Number of Equity Incentive Plans Share-Based Payment Arrangement, Number of Equity Incentive Plans Total assets Assets Common stock, authorized (in shares) Common Stock, Shares Authorized Net income (loss) attributable to common stockholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted Geographical Geographical [Domain] Net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Research and development Research and Development Expense Balance Sheet Components Supplemental Balance Sheet Disclosures [Text Block] Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Debt securities Debt Securities, Noncurrent Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Revenue remaining performance obligation, expected timing of satisfaction period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Measurement Frequency Measurement Frequency [Axis] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Furniture and fixtures Furniture and Fixtures [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Entity Tax Identification Number Entity Tax Identification Number Other Other Assets, Miscellaneous, Current Corporate and other debt securities Corporate Bond Securities [Member] Numerator: Earnings Per Share, Basic [Abstract] Geographical Geographical [Axis] Basic (in shares) Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in dollars per share) Net income per share attributable to common stockholders, diluted (in dollars per share) Earnings Per Share, Diluted Non-cash operating lease cost Operating Lease, Right-of-Use Asset, Amortization Expense Unbilled contracts receivable Unbilled Contracts Receivable Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Strategic Investments Investment, Policy [Policy Text Block] Goodwill, tax deductible amount Business Acquisition, Goodwill, Expected Tax Deductible Amount Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Weighted-average shares used in computing net income per share attributable to common stockholders: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Gain on existing investment Income (Loss) from Equity Method Investments Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Accrued expenses and other current liabilities Accrued expenses and other current liabilities Accrued Liabilities And Other Liabilities Current Accrued liabilities and other liabilities current. Fair Value Measurements Fair Value Disclosures [Text Block] Accounts payable Accounts Payable, Current Concentration Risk Type [Axis] Concentration Risk Type [Axis] Depreciation and amortization Depreciation, Depletion and Amortization Schedule of Financial Instruments Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Marketable Securities [Table] Marketable Securities [Table] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Strategic investments Long-term Investments Financial Instruments [Domain] Financial Instruments [Domain] Measurement Alternative Alternative Investment Cost of revenue Cost of Goods and Services Sold Class B Common Stock Common Class B [Member] Purchase of intangible assets Payments to Acquire Intangible Assets Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Outstanding Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] Income Statement Location Income Statement Location [Domain] Total strategic investments Investments, Fair Value Disclosure Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Total operating expenses Operating Expenses Stockholders’ Equity and Equity Incentive Plans Shareholders' Equity and Share-based Payments [Text Block] Other liabilities, noncurrent Other liabilities, noncurrent Other Liabilities, Noncurrent Schedule of Accrued Expenses and Other Current Liabilities Accrued Expenses And Other Current Liabilities [Table Text Block] Accrued expenses and other current liabilities. Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Net income per share attributable to common stockholders: Earnings Per Share [Abstract] Gains on strategic investments, net Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount Property and equipment, gross Property, Plant and Equipment, Gross Less: allowance for credit losses Beginning balance Ending balance Accounts Receivable, Allowance for Credit Loss Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Document Quarterly Report Document Quarterly Report Remaining performance obligation percentage Revenue, Remaining Performance Obligation, Percentage Sales of marketable securities Proceeds from Sale of Debt Securities, Available-for-sale 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 Other Commitments [Line Items] Other Commitments [Line Items] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Stock-based compensation expense Share-based Payment Arrangement, Expense Weighted-average remaining contractual life (years), vested and exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Weighted- Average Grant Date Fair Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Effective tax rate Effective Income Tax Rate Reconciliation, Percent Restricted cash from international employee stock sales Restricted Cash, Current Class A Common Stock Common Class A [Member] Cash, cash equivalents, and restricted cash – beginning of period Cash, cash equivalents, and restricted cash – end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Table Text Block] Prepaid Expenses and Other Current Assets Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Income tax payable Taxes Payable, Current Statement of Comprehensive Income [Abstract] Current assets: Assets, Current [Abstract] Other Proceeds from (Payments for) Other Financing Activities Interest income and other, net Interest Income (Expense), Nonoperating, Net Entity Central Index Key Entity Central Index Key Security Exchange Name Security Exchange Name Issuance of common stock upon release of restricted stock units (in shares) Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Issuance of common stock upon exercise of stock options (in shares) Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Diluted (in shares) Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Fair Value, Recurring Basis Fair Value, Recurring [Member] Income Taxes Income Tax Disclosure [Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Summary of Stock Option Activity Under Equity Incentive Plan Share-based Payment Arrangement, Option, Activity [Table Text Block] Write-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Measurement Basis [Axis] Measurement Basis [Axis] Summary of Potential Shares of Common Stock Excluded from Computation of Diluted Net Income Per Share Attributable to Common Stockholders Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Sales and other tax liabilities Sales And Other Tax Liabilities Current Sales and other tax liabilities current. Statement of Cash Flows [Abstract] Total equity securities Equity Securities, Alternative Investment And Equity Method Method Investments, Fair Value Disclosure Equity Securities, Alternative Investment And Equity Method Method Investments, Fair Value Disclosure Class of Stock [Line Items] Class of Stock [Line Items] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Less: accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Marketable Securities [Line Items] Marketable Securities [Line Items] Issuance of common stock for employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Business combination, current assets, other Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value General and administrative General and Administrative Expense [Member] Ownership percentage of economic interest of investee's outstanding capital stock (as a percent) Equity Securities, Ownership Percentage Equity Securities, Ownership Percentage Summary of Business and Significant Accounting Policies Business Description and Accounting Policies [Text Block] Purchase rights committed under the ESPP Purchase Rights Committed under the ESPP [Member] Purchase Rights Committed under the ESPP Total current liabilities Liabilities, Current Employee Stock Purchase Plan Employee Stock [Member] Class of Stock Class of Stock [Domain] Payments to acquire businesses, gross Payments to Acquire Businesses, Gross Money market funds Money Market Funds [Member] Business combination, cash and equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Entity Address, Postal Zip Code Entity Address, Postal Zip Code Charitable donation of common stock Adjustments To Additional Paid In Capital, Charitable Donation Of Common Stock Adjustments To Additional Paid In Capital, Charitable Donation Of Common Stock Loss contingency, number of defendants Loss Contingency, Number of Defendants Payments for legal settlements Payments for Legal Settlements Document Information [Line Items] Document Information [Line Items] Title of 12(b) Security Title of 12(b) Security Sales and other tax liabilities Sales And Other Tax Liabilities Non Current Sales and other tax liabilities non current. Prepaid expenses and other current assets Other Assets, Current Proceeds from issuance of common stock for employee stock purchase plan Proceeds from Stock Plans Statement [Table] Statement [Table] Range Statistical Measurement [Axis] Cover [Abstract] Stockholders' Equity Note [Abstract] Goodwill Goodwill Proceeds from employee equity transactions to be remitted to employees and tax authorities Employee-related Liabilities, Employee Stock Sales, Current Employee-related Liabilities, Employee Stock Sales, Current Less: allowance for returns Accounts Receivables, Allowance for Returns Accounts Receivables, Allowance for Returns Cost of revenue Cost of Sales [Member] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Accounts receivable, noncurrent Accounts Receivable, after Allowance for Credit Loss, Noncurrent Less than one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Prepaid expenses, noncurrent Prepaid Expense, Noncurrent Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Charitable donation of common stock Donation of Common Stock to Charitable Foundation Donation of Common Stock to Charitable Foundation Deferred contract acquisition costs, current Capitalized Contract Cost, Net, Current Accounts Receivable, Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss [Table Text Block]