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Compensation Arrangement By Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period Name Forgone Recovery, Individual Name Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Stock options, RSUs and PSUs Employee Stock Option, Restricted Stock Units (RSU) And Performance Stock Units (PSU) [Member] Employee Stock Option And Restricted Stock Units (RSU) [Member] Purchase period (in months) Share-based Compensation Arrangement By Share-based Payment Award, Purchase Period Share-based Compensation Arrangement By Share-based Payment Award, Purchase Period Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Purchase price as a percentage of fair market value of stock on the offering date or the purchase date Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Employee payroll taxes paid related to net share settlement of restricted stock units Payment, Tax Withholding, Share-Based Payment Arrangement Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Amortized Cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net income (loss) attributable to PagerDuty, Inc. common stockholders Net income (loss) attributable to PagerDuty, Inc. common stockholders Net Income (Loss) Available to Common Stockholders, Basic Investments Marketable Securities, Current Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Contract with Customer, Duration [Domain] Contract with Customer, Duration [Domain] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Current liabilities: Liabilities, Current [Abstract] Geographical [Axis] Geographical [Axis] Total operating expenses Operating Expenses Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Net income (loss) per share, diluted, attributable to PagerDuty, Inc. common stockholders (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable, net of allowance for credit losses of $693 and $1,175 as of April 30, 2026 and January 31, 2026, respectively Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Amortization of deferred contract costs Capitalized Contract Cost, Amortization Treasury stock, beginning balance (in shares) Treasury stock, ending balance (in shares) Treasury Stock, Common, Shares Earnings Per Share [Abstract] Earnings Per Share [Abstract] Performance condition (as a percent) Share-Based Compensation Arrangement By Share-Based Payment Award, Percent Of Target Amount Share-Based Compensation Arrangement By Share-Based Payment Award, Percent Of Target Amount Option Indexed to Issuer's Equity [Axis] Option Indexed to Issuer's Equity [Axis] Gross profit Gross Profit Summary of Anti-dilutive Securities That Were Not Included in Diluted Per Share Calculations Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Noncontrolling Interest [Abstract] Proceeds from liquidation of non-marketable equity investments Proceeds from Sale of Equity Securities, FV-NI Money market funds Money Market Funds, at Carrying Value Repurchases of common stock (in shares) Treasury Stock, Shares, Acquired Adjustment to redeemable non-controlling interest Adjustments to redeemable non-controlling interest Adjustment To Redeemable Non-Controlling Interests Adjustment To Redeemable Non-Controlling Interests Award Timing Disclosures [Line Items] Long term debt Principal Long-Term Debt, Gross Accrued compensation Employee-related Liabilities, Current Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Deferred contract costs, current Capitalized Contract Cost, Net, Current Fiscal Period Fiscal Period, Policy [Policy Text Block] Net income (loss) attributable to PagerDuty, Inc. Net income (loss) attributable to PagerDuty, Inc. Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Expiration Date Trading Arrangement Expiration Date Ownership percentage (as a percent) Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Construction-in-progress Construction in Progress [Member] Vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Geographic Concentration Risk Geographic Concentration Risk [Member] Repurchases of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Income (loss) from operations Operating Income (Loss) Consolidated Entities [Domain] Consolidated Entities [Domain] Due within one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Accumulated deficit Retained Earnings (Accumulated Deficit) Vesting of restricted stock units and performance stock units, net of employee payroll taxes (in shares) Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Repaid in cash Repayments of Debt Class of Stock [Axis] Class of Stock [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Changes in operating assets and liabilities: Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] 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] Number of shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Statement [Table] Statement [Table] Other (expense) income, net Other Nonoperating Income (Expense) Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Redeemable Non-Controlling Interest Noncontrolling Interest Disclosure [Text Block] Beginning balance (in shares) Ending balance (in shares) Shares, Issued Deferred revenue, beginning of period Deferred revenue, end of period Contract with Customer, Liability Description of Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Cash and cash equivalents: Cash and Cash Equivalents [Abstract] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Retirement of treasury stock (in shares) Treasury Stock, Shares, Retired Amendment Flag Amendment Flag Number of shares authorized for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Capitalized software Software Development [Member] Treasury stock Treasury Stock, Common, Value Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation PORTUGAL PORTUGAL 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 Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Summary of Information about Company's Financial Assets Fair Value, Assets Measured on Recurring Basis [Table Text Block] Weighted average shares used in calculating net loss per share, basic (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] Remaining amount authorized Share Repurchase Program, Remaining Authorized, Amount Cost of revenue Cost of Product and Service Sold Summary of Calculation of Basic and Diluted Net Loss Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Director Director [Member] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Impairment loss in relation to costs capitalized Capitalized Contract Cost, Impairment Loss Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] 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 debt issuance costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Deferred contract costs, non-current Capitalized Contract Cost, Net, Noncurrent Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Performance adjustment for 2024 PSU Awards (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Performance Adjustments, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Performance Adjustments, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Automatic exercise period for capped calls, trading days Option Indexed to Issuer's Equity, Automatic Exercise Period, Trading Days Option Indexed to Issuer's Equity, Automatic Exercise Period, Trading Days Cap price (in dollars per share) Option Indexed to Issuer's Equity, Stock Price Cap Option Indexed to Issuer's Equity, Stock Price Cap Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Summary of Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Subsequent Events Subsequent Events [Text Block] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Purchase of property and equipment, accrued but not yet paid Capital Expenditures Incurred but Not yet Paid Total available-for-sale investments Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Common stock Common Stock, Value, Outstanding Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Stock repurchased during period (in shares) Stock Repurchased During Period, Shares Operating expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Deferred contract costs Increase (Decrease) In Capitalized Contract Costs Increase (Decrease) In Capitalized Contract Costs 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] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Total cash and cash equivalents Cash and Cash Equivalent Vesting of restricted stock units and performance stock units, net of employee payroll taxes Restricted Stock, Value, Shares Issued Net of Tax Withholdings Summary of Restricted Stock Unit Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Subsequent Event [Line Items] Subsequent Event [Line Items] Common Stock 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 Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate debt securities Corporate Debt Securities [Member] Increase (Decrease) In Contract with Customer, Liability [Roll Forward] Increase (Decrease) In Contract with Customer, Liability [Roll Forward] Increase (Decrease) In Contract with Customer, Liability [Roll Forward] 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 Stock options, RSUs, PSUs, and ESPP obligations (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment