Proceeds from divestiture of business Proceeds from Divestiture of Businesses Dividends per share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Statistical Measurement [Domain] Statistical Measurement [Domain] Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Restricted cash included in prepaid expenses and other current assets Restricted Cash, Current Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Paid-in Capital Additional Paid-in Capital [Member] Interest Rate Swap Interest Rate Swap [Member] Other Income (Expense), Net Other Income and Other Expense Disclosure [Text Block] Treasury stock, at cost Treasury Stock, Number of Shares and Restriction Disclosures [Abstract] Tabular List, Table Tabular List [Table Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Proceeds from divestiture of businesses, net of cash divested Proceeds from Divestiture of Businesses, Net of Cash Divested Goodwill [Line Items] Goodwill [Line Items] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic earnings (loss) per share (in dollars per share) Basic earnings (loss) per share on common stock (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Liabilities, Fair Value Disclosure [Abstract] Liabilities, Fair Value Disclosure [Abstract] Revenue Revenue from Contract with Customer [Text Block] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Short-term borrowings Short-Term Debt Estimated insurance recoveries Estimated Insurance Recoveries Adjustment to Compensation, Amount Adjustment to Compensation Amount Stock-based compensation Share-Based Payment Arrangement, Noncash Expense IT-related Charges Communications and Information Technology Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Proceeds from sale of assets Proceeds from Sale of Productive Assets Dividends Dividends, Common Stock, Cash Total stockholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Measurement Frequency [Axis] Measurement Frequency [Axis] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Compensation expense (benefit) Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current Assets Assets, Current [Abstract] Total Liabilities and Stockholders’ Equity Liabilities and Equity Measured on Recurring Basis Fair Value, Recurring [Member] Pension liability adjustments: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Interest rate Line of Credit Facility, Interest Rate at Period End Currency exchange effects Accounts Receivable, Allowance for Credit Loss, Current Exchange Effects Accounts Receivable, Allowance for Credit Loss, Current Exchange Effects Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Cover page. Cover [Abstract] Amounts reclassified from accumulated other comprehensive income (loss) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Maximum Maximum [Member] Property and equipment: Property, Plant and Equipment, Net [Abstract] Pension liability adjustments, tax expense (benefit) Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax 2024 Actions 2024 Actions [Member] 2024 Actions Restricted Stock Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Treasury Stock Treasury Stock, Common [Member] Dividends Payable [Line Items] Dividends Payable [Line Items] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Education Education [Member] Education [Member] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Earnings (loss) before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Capital stock, $1.00 par value Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Foreign currency translation adjustments, tax expense (benefit) OCI, Foreign Currency Transaction and Translation Gain (Loss), Arising During Period, Tax Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Goodwill impairment charge Impairment adjustments Goodwill, Impairment Loss Reporting Segments Operating Segments [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Talent Solutions Talent Solutions [Member] Talent Solutions [Member] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Other receivables Other Receivables Operating lease liabilities Operating Lease, Liability, Current Document Fiscal Period Focus Document Fiscal Period Focus Ayers Group Ayers Group [Member] Ayers Group Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Foreign currency translation adjustments: Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Long-term debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total Assets Assets Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol 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 Geographical [Domain] Geographical [Domain] Entity Address, City or Town Entity Address, City or Town Loss contingency, portion not accrued Loss Contingency, Range of Possible Loss, Portion Not Accrued Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Other segment expenses Segment Reporting, Other Segment Item, Amount Effect of exchange rates on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO 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Information [Table] Document Information [Table] PEO PEO [Member] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] The Facility The Facility [Member] The Facility Interest income Investment Income, Interest Accrued workers’ compensation and other claims Workers' Compensation Liability, Noncurrent United States UNITED STATES Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date 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[Member] Common Class B Treasury Stock [Member] Property and equipment Property, Plant and Equipment, Gross Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities at fair value Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Derivative, notional amount Derivative, Notional Amount Discontinued Operations and Disposal Groups [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Integration, Realignment and Restructuring Restructuring and Related Activities Disclosure [Text Block] Operating lease asset amortization Operating Lease, Right-of-Use Asset, Periodic Reduction Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Additions Goodwill, Acquired During Period Debt instrument, interest rate, utilization Debt Instrument, Interest Rate, Utilization Debt Instrument, Interest Rate, Utilization City Area Code City Area Code Acquisitions and Disposition Mergers, Acquisitions and Dispositions Disclosures [Text Block] Acquisition of company, net of cash received Payments to Acquire Businesses, Net of Cash Acquired Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Direct salaries Cost, Direct Labor All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Other Other Americas [Member] Other Americas Nonvested, beginning balance (in shares) Nonvested, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Pension liability adjustments, net of tax benefit of $0.4 Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Conversions from Class B and to Class A Conversion of Stock, Amount Converted Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Reallocation Goodwill, Period Increase (Decrease) Debt instrument, term Debt Instrument, Term Business combination, net working capital liability Business Combination, Net Working Capital Liability Business Combination, Net Working Capital Liability Performance Shares Performance Shares, Financial Measure [Member] Performance Shares, Financial Measure [Member] Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Equity Components [Axis] Equity Components [Axis] Staffing Services Staffing Services [Member] Staffing Services [Member] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Unsecured Uncommitted Short Term Local Credit Facilities Unsecured Uncommitted Short Term Local Credit Facilities [Member] Unsecured Uncommitted Short Term Local Credit Facilities Less: Reclassification adjustments included in net earnings Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Other restructuring costs Fees and Other/Transformation Costs Other Restructuring Costs Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Goodwill, impaired, accumulated impairment loss Goodwill, Impaired, Accumulated Impairment Loss Other Performance Measure, Amount Other Performance Measure, Amount Foreign currency translation adjustments, net of tax benefits of $0.0 and $0.1, tax expense of $0.6 and tax benefit of $0.1, respectively Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Entity Address, State or Province Entity Address, State or Province Other Other Nonoperating Income (Expense), Miscellaneous Other Nonoperating Income (Expense), Miscellaneous Interest Rate Swap, Contract Two Interest Rate Swap, Contract Two [Member] Interest Rate Swap, Contract Two Total current liabilities Liabilities, Current Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] SG&A expenses Selling, General and Administrative Expense, Adjusted Selling, General and Administrative Expense, Adjusted Disposal group, not discontinued operation, gain (loss) on disposal, including net foreign currency gain (loss) Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Including Net Foreign Currency Gain (Loss) Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Including Net Foreign Currency Gain (Loss) Dividend payments Payments of Ordinary Dividends, Common Stock Entity [Domain] Entity [Domain] Net cash from (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation 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] Gain (loss) on sale of EMEA staffing operations Gain (Loss) on Disposition of Business Sale of Assets Sale of Assets [Text Block] Sale of Assets [Text Block] Business Combination, Schedule of Purchase Price Business Combination, Schedule of Purchase Price [Table Text Block] Business Combination, Schedule of Purchase Price Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Acquisition related costs Business Combination, Acquisition-Related Cost, Expense Contingencies Legal Matters and Contingencies [Text Block] Number of reporting units after combination Number of Reporting Units After Combination Number of Reporting Units After Combination Schedule of Nonvested Performance Shares Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Segment Disclosures Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] 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] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Business combination, contingent consideration, liability Business Combination, Contingent Consideration, Liability Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Selling, general and administrative expenses Selling, general and administrative expenses Selling, General 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Compensation Amount Interest Rate Swap, Contract One Interest Rate Swap, Contract One [Member] Interest Rate Swap, Contract One Arrangement Duration Trading Arrangement Duration Segments [Axis] Segments [Axis] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] EMEA Staffing Operations EMEA Staffing Operations [Member] EMEA Staffing Operations Other investing activities Payment for (Proceeds from) Other Investing Activity Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Purchase price of disposition Disposal Group, Including Discontinued Operation, Consideration Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Debt Instrument [Axis] Debt Instrument [Axis] 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 Fair Value Measurements Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Credit Facility [Domain] Credit Facility [Domain] Stockholders’ Equity Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Investment, Name [Axis] Investment, Name [Axis] Allowance for trade accounts receivables Accounts Receivable, Allowance for Credit Loss, Current Depreciation and amortization: Depreciation and Amortization, Including Hosted Software Implementation Costs Depreciation and Amortization, Including Hosted Software Implementation Costs Operating lease liabilities Operating Lease, Liability, Noncurrent Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] 2025 Actions 2025 Actions [Member] 2025 Actions Americas Americas [Member] Children's Therapy Center (CTC) Children's Therapy Center (CTC) [Member] Children's Therapy Center (CTC) Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to 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Facility Fee [Member] Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Brazil BRAZIL Other financing activities Proceeds from (Payment for) Other Financing Activity Additional consideration payable Business Combination, Consideration Transferred, Tangible and Intangible Assets, Excluding Cash Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Revenue from Services Segment Reporting, Revenue Reconciling Item [Line Items] Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Reconciliation of Revenue from Segments to Consolidated [Table] Reconciliation of Revenue from Segments to Consolidated [Table] Other, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Subsegments [Domain] Subsegments [Domain] Other Income (Expense) [Line Items] Other Income (Expense) [Line Items] Other Income (Expense) [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Share-based compensation arrangement by share-based payment award, number of performance periods Share-Based Compensation Arrangement By Share-based Payment Award, Number Of Performance Periods Share-Based Compensation Arrangement By Share-based Payment Award, Number Of Performance Periods Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Other Long Term Liabilities Other Long Term Liabilities [Member] Other Long Term Liabilities Accounts Receivable, Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss [Table Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure 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Ltd. PersolKelly Pte. Ltd. [Member] PersolKelly Pte. Ltd. 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