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[Member] 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 Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Unrealized gains (losses) on marketable securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] April 14, 2026 Hyman Plan [Member] April 14, 2026 Hyman Plan Corporate debt securities Corporate Debt Securities [Member] Professional services and other Professional Services Revenue [Member] Professional Services Revenue Net loss per share attributable to Braze, Inc. common stockholders, diluted (in dollars per share) 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Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2030 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Prepaid deposits Deposits Assets, Current Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Other Assets, Noncurrent Document Type Document Type 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] Fair Value as of Grant Date Award Grant Date Fair Value Grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase program, remaining amount authorized Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Loss before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies 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Goodwill [Roll Forward] Furniture and fixtures Furniture and Fixtures [Member] LIABILITIES, REDEEMABLE NON-CONTROLLING INTEREST, AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Restricted Covenant Relationships Restricted Covenant Relationships [Member] Restricted Covenant Relationships Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Remainder of 2027 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Fair Value Measurements Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Lessee, Operating Lease, Term of Contract Lessee, Operating Lease, Term of Contract Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining 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Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Automatic increase in ESPP (in shares) Common Stock, Capital Shares Reserved For Future Issuance, Increase Maximum Number Common Stock, Capital Shares Reserved For Future Issuance, Increase Maximum Number Comprehensive loss, net Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Subsequent Event [Table] Subsequent Event [Table] Payments to Acquire Businesses, Gross Payments to Acquire Businesses, Gross Stock-based compensation Share-Based Payment Arrangement, Noncash Expense 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Total net lease cost Lease, Cost Employee Stock Employee Stock [Member] Customer [Domain] Customer [Domain] Leases Lessee, Operating Leases [Text Block] Schedule of Derivative Instruments in Statement of Financial Position Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Net loss per share attributable to Braze, Inc. common stockholders, basic (in dollars per share) Earnings Per Share, Basic Repurchase of common stock Payments for Repurchase of Common Stock Deferred revenue Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Deferred revenue Accounts Receivable, Allowance For Credit Loss, Charge to Deferred Revenue Accounts Receivable, Allowance For Credit Loss, Charge to Deferred Revenue Cost of revenue Cost of Revenue Other comprehensive income before reclassifications Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Short-term lease cost Short-Term Lease, Cost Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Cost or Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Accounts receivable, net of allowance of $1,808 and $1,934, respectively Accounts Receivable, after Allowance for Credit Loss, Current Accumulated deficit Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Restricted cash, noncurrent Restricted Cash, Noncurrent Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Class A and Class B Common Stock Common Stock [Member] Operating lease cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Shares issued in period (in 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Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Remainder of 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Table Text Block] General and administrative General and Administrative Expense Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Derivatives used in Net Investment Hedge, Net of Tax [Roll Forward] Derivatives used in Net Investment Hedge, Net of Tax [Roll Forward] Net income attributable to redeemable non-controlling interest Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Hedging Designation [Domain] Hedging Designation [Domain] Class of Stock [Domain] Class of Stock [Domain] Shares reserved for future issuance, period of automatic increase Common Stock, Capital Shares Reserved For Future Issuance, Period Of Automatic Increase Common Stock, Capital Shares Reserved For Future Issuance, Period Of Automatic Increase Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Marketable securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Hedging Designation [Axis] Hedging Designation [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total financial assets Assets, Fair Value Disclosure Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Consideration transferred Business Combination, Consideration Transferred Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Prepaid office related expenses Prepaid Office Expenses, Current Prepaid Office Expenses, Current Capitalized internal-use software costs Payments to Develop Software Charitable donation of stock Stock Issued During Period, Value, Charitable Donations Stock Issued During Period, Value, Charitable Donations Name Trading Arrangement, Individual Name Unrecognized compensation costs, RSUs Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents Cash and Cash Equivalent Capital stock, shares authorized (in shares) Capital Stock, Shares Authorized Capital Stock, Shares Authorized Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Accretion/amortization of discount/premium, net Investment Income, Net, Amortization of Discount and Premium Entity Address, Address Line Three Entity Address, Address Line Three Entity Address, Address Line Two Entity Address, Address Line Two Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net loss Net loss Net loss (including amounts attributable to redeemable non-controlling interests) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest CURRENT ASSETS: Assets, Current [Abstract] Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Cash flow hedges Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Operating lease right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 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 Provision for income taxes Income Tax Expense (Benefit) Customer Concentration Risk Customer Concentration Risk [Member] Technology Technology-Based Intangible Assets [Member] Award Timing Method Award Timing Method [Text Block] Net change in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Shares reserved for future issuance, increase as percentage of total shares outstanding Common Stock, Capital Shares Reserved For Future Issuance, Increase As Percentage Of Total Shares Outstanding Common Stock, Capital Shares Reserved For Future Issuance, Increase As Percentage Of Total Shares Outstanding Accrued interest receivable Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Net loss attributable to Braze, Inc. Net Income (Loss) Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from exercise of common stock options Proceeds from Stock Options Exercised Noncontrolling Interest [Roll Forward] Noncontrolling Interest [Roll Forward] Noncontrolling Interest Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Remaining Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Investment interest receivable Prepaid Events, Current Prepaid Events, Current Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Prepaid professional services Prepaid Professional Fees, Current Prepaid Professional Fees, Current Contract asset Contract with Customer, Asset, before Allowance for Credit Loss Non-cash foreign exchange (gain) loss Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Recoveries Accounts Receivable, Allowance for Credit Loss, Recovery Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract]