Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Insights Insights [Member] -- None. No documentation exists for this element. -- Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Fair Value Asset (Liability), Net Derivative Assets (Liabilities), at Fair Value, Net Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Adjustment to Compensation, Amount Adjustment to Compensation Amount Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Estimated Future Amortization Expense by Year Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Common stock, $0.0005 par value, 250,000,000 shares authorized; 163,602,067 shares issued for both periods Common Stock, Value, Issued Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Transferred over time Transferred over Time [Member] Leases Lessee, Finance Leases [Text Block] Restatement Determination Date Restatement Determination Date Derivative Instrument [Axis] Derivative Instrument [Axis] Proceeds from sale of divested operation, net of cash transferred Proceeds from Divestiture of Businesses Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Current liabilities: Liabilities, Current [Abstract] Schedule of Notional Amounts of Outstanding Derivative Positions Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Disposal Group Classification [Axis] Disposal Group Classification [Axis] Cost of services and product development - unallocated Other Cost of Operating Revenue Leases [Abstract] Other comprehensive income (loss), net of tax: Other comprehensive income (loss) activity during the period: Other Comprehensive Income (Loss), Net of Tax [Abstract] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province Line of credit facility, additional borrowing capacity Line of Credit Facility, Additional Borrowing Capacity Line of Credit Facility, Additional Borrowing Capacity Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Assets: Assets, Fair Value Disclosure [Abstract] Intangible assets, net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Notional Amounts Derivative, Notional Amount Share Repurchase Program [Domain] Share Repurchase Program [Domain] Basic (in shares) Weighted average number of common shares used in the calculation of basic income per share (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current 2024 Credit Agreement 2024 Credit Agreement [Member] 2024 Credit Agreement Customer Relationships Customer Relationships [Member] Deferred revenues Increase (Decrease) in Deferred Revenue Entity Address, City or Town Entity Address, City or Town Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Finite-lived intangible assets, net Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Contractual annualized interest rate Line of Credit Facility, Interest Rate at Period End Other Other Reportable Segment [Member] Other Reportable Segment Sublease income Sublease Income Level 2 Fair Value, Inputs, Level 2 [Member] Accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Current portion of long-term debt Long-Term Debt, Current Maturities Other expenses Other Expenses Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Change in AOCL before reclassifications to income OCI, before Reclassifications, before Tax, Attributable to Parent Class of Treasury Stock [Table] Class of Treasury Stock [Table] Adoption of new accounting standard and Accounting standards issued but not yet adopted New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Segment Reporting Information by Segment Segment Reporting [Table Text Block] Use of estimates Use of Estimates, Policy [Policy Text Block] Amortization and write-off of deferred financing fees Amortization of Debt Issuance Costs Schedule of Supplemental Balance Sheet Information Liabilities, Leases [Table Text Block] Liabilities, Leases Unsecured Debt Unsecured Debt [Member] Revenue recognition Revenue from Contract with Customer [Policy Text Block] Other comprehensive income (loss), net of tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Carrying Amount Long-Term Debt Assets: Contract with Customer, Asset, after Allowance for Credit Loss [Abstract] Open Market Purchases, Excluded Open Market Purchases, Excluded [Member] Open Market Purchases, Excluded Document Period End Date Document Period End Date Cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Unrecognized tax benefits Unrecognized Tax Benefits Liabilities held-for-sale Disposal Group, Including Discontinued Operation, Liabilities, Current Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Aggregate principal amount Debt Instrument, Face Amount Equity Equity [Text Block] Costs and expenses: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Debt instrument term Debt Instrument, Term Treasury stock, at cost, 99,197,399 and 92,752,769 common shares, respectively Treasury Stock, Common, Value Total Liabilities Liabilities, Fair Value Disclosure Accumulated other comprehensive loss, net Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Other International Other International [Member] -- None. No documentation exists for this element. -- Accounts payable and accrued liabilities Operating Lease, Liability, Current Segments Segment Reporting, Policy [Policy Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Computation of Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings Per Share [Abstract] Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Changes in assets and liabilities, net of acquisitions and divestitures: Increase (Decrease) in Operating Capital, Net of Acquisition [Abstract] -- None. No documentation exists for this element. -- Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Other Other Long Term Debt [Member] Other Long Term Debt [Member] Total Liabilities Liabilities Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Digital Markets Digital Markets [Member] Digital Markets Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Reclassifications from AOCL to income Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] 2031 Notes Senior Notes Due 2031 [Member] Senior Notes Due 2031 Defined Benefit Pension Plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Principal amount outstanding Long-Term Debt, Gross Line of credit facility, commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Economic Development Loan 2 Economic Development Loan 2 [Member] Economic Development Loan 2 [Member] Credit Facility [Domain] Credit Facility [Domain] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Shares used in the calculation of diluted income per share (in shares) Weighted Average Number of Shares Outstanding, Diluted Cost for subleasing activities Operating Lease, Cost, Subleasing Activities Operating Lease, Cost, Subleasing Activities Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] 2035 Notes Senior Notes Due 2035 [Member] Senior Notes Due 2035 Disposal Group Name [Domain] Disposal Group Name [Domain] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Derivatives and Hedging Derivative Instruments and Hedging Activities Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Gross contribution Gross Profit 2028 Notes Senior Notes Due 2028 [Member] Senior Notes Due 2028 Revenue from Contract with Customer [Abstract] Other Other Intangible Assets [Member] Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Additions to property, equipment and leasehold improvements Payments for Capital Improvements Digital Markets Reporting Unit Digital Markets Reporting Unit [Member] Digital Markets Reporting Unit Treasury Stock Treasury Stock, Common [Member] Connecticut Economic Development Program Connecticut Economic Development Program [Member] -- None. No documentation exists for this element. -- Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Dilutive effect of outstanding awards associated with stock-based compensation plans (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Issuances under stock plans Shares Granted, Value, Share-Based Payment Arrangement, after Forfeiture All Executive Categories All Executive Categories [Member] Proceeds from sale of notes Proceeds from Sale of Notes Receivable Debt instrument, issue price, percent Debt Instrument, Issue Price, Percentage Debt Instrument, Issue Price, Percentage Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Depreciation Depreciation Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Renewal term (in years) Lessee, Operating Lease, Renewal Term Schedule of Basic and Diluted Earnings Per Share Calculations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segment Information Segment Reporting [Text Block] Minimum Minimum [Member] Expiration Date Trading Arrangement Expiration Date Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Effects of exchange rates on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Location, Statement of Income, Balance [Axis] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 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] Variable Rate Component One Variable Rate Component One [Member] Variable Rate Component One Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Disposal Groups, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Remaining amortization period Intangible Asset, Finite-Lived, Useful Life Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Exercise Price Award Exercise Price Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Segment Reporting [Line Items] Segment Reporting [Line Items] 2029 Notes Senior Notes Due 2029 [Member] Senior Notes Due 2029 Document Quarterly Report Document Quarterly Report Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] 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] Segments [Domain] Segments [Domain] Interest rate swaps Interest Rate Swap [Member] Debt Debt Disclosure [Text Block] Payments on long-term debt Repayments of long-term debt Repayments of Long-Term Debt Disposal Group Classification [Domain] Disposal Group Classification [Domain] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Europe, Middle East and Africa Europe, Middle East And Africa [Member] -- None. No documentation exists for this element. -- Fees receivable, gross Accounts Receivable, before Allowance for Credit Loss, Current Total costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Contract liabilities: Contract with Customer, Liability [Abstract] Disposal consideration Disposal Group, Including Discontinued Operation, Consideration Debt instrument, fixed interest rate Debt Instrument, Interest Rate, Stated Percentage Total Stockholders’ (Deficit) Equity Beginning balance Ending balance Equity, Attributable to Parent Disposed of by Sale Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total operating lease liabilities included in the Condensed Consolidated Balance Sheets Operating Lease, Liability Insider Trading Policies and Procedures [Line Items] Stock repurchase program, additional authorized amount Stock Repurchase Program, Additional Authorized Amount Stock Repurchase Program, Additional Authorized Amount Fees receivable, allowance Accounts Receivable, Allowance for Credit Loss, Current Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Variable Rate Components [Domain] Variable Rate Components [Domain] Variable Rate Components [Domain] Deferred taxes Deferred Income Tax Expense (Benefit) Selling, general and administrative Selling, general and administrative Selling, General and Administrative Expense Open Market Purchases Open Market Purchases [Member] Open Market Purchases Letter of Credit Letter of Credit [Member] Variable Rate Component Two Variable Rate Component Two [Member] Variable Rate Component Two Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Antidilutive securities excluded from computation of (loss) income per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Restricted stock units Restricted Stock Units (RSUs) [Member] Schedule of Changes to the Carrying Amount of Goodwill by Segment Goodwill [Table Text Block] Entity Central Index Key Entity Central Index Key All Adjustments to Compensation All Adjustments to Compensation [Member] 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] Cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Income Statement [Abstract] Income Statement [Abstract] Stockholders’ (Deficit) Equity Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Option to terminate, term (in years) Lessee, Operating Lease, Option to Terminate, Term Lessee, Operating Lease, Option to Terminate, Term Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Intersegment Eliminations Intersegment Eliminations [Member] Stock appreciation rights Stock Appreciation Rights (SARs) [Member] Schedule of Amortizable Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] Additional interest above base rate Debt Instrument, Basis Spread on Variable Rate City Area Code City Area Code Accumulated Other Comprehensive Loss, Net Total AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Subsequent Event Subsequent Events [Text Block] Fair Value Debt Instrument, Fair Value Disclosure Schedule of Disaggregation of Revenue by Reportable Segment Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total Assets Assets Product and content delivery expenses Product And Content Delivery Expenses Product And Content Delivery Expenses Variable Rate Components [Axis] Variable Rate Components [Axis] Variable Rate Components Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Operating Segments Operating Segments [Member] Pension plans – net change in deferred actuarial loss Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Interest expense, net Interest Expense, Nonoperating Schedule of Stock-based Compensation Expense by Expense Category Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Other assets Increase (Decrease) in Other Operating Assets PEO PEO [Member] Net balance sheet carrying amount Debt, Long-Term and Short-Term, Combined Amount Deferred commissions Increase (Decrease) in Deferred Charges Stock-based compensation expense Share-Based Payment Arrangement, Expense Other liabilities Other Liabilities, Noncurrent Goodwill Beginning balance Ending balance Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Reporting Unit [Axis] Reporting Unit [Axis] Revenue recognized previously attributable to deferred revenues Contract with Customer, Liability, Revenue Recognized Subsequent Event Type [Domain] Subsequent Event Type [Domain] Accumulated Earnings Retained Earnings [Member] Operating lease liabilities Operating lease liabilities Operating Lease, Liability, Noncurrent Weighted average effective rate Long-Term Debt, Weighted Average Interest Rate, over Time Revolving Credit Facility Revolving Credit Facility [Member] Loss on impairment of lease related assets Operating Lease, Impairment Loss Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Diluted (in dollars per share) Diluted income per share (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Liabilities: Liabilities, Fair Value Disclosure [Abstract] Amortization of intangibles Intangible Asset, Finite-Lived, Amortization Expense Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Adjustments to reconcile net income to cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Total revenues Revenues Revenue from Contract with Customer, Excluding Assessed Tax Property, equipment and leasehold improvements, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Types of Financial Instruments [Domain] Financial Instruments [Domain] Assets held-for-sale Disposal Group, Including Discontinued Operation, Assets, Current Common share repurchases (including excise tax) Stock Repurchased During Period, Value Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Goodwill and Intangible Assets Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Revenue and Related Matters Revenue from Contract with Customer [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Proceeds from employee stock purchase plan Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Conferences Conferences Conferences [Member] -- None. No documentation exists for this element. -- Denominator: Denominator: [Abstract] -- None. No documentation exists for this element. -- Segment Reporting [Table] Segment Reporting [Table] Number of shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Number of Contracts Derivative, Number of Instruments Held Schedule of Lease Costs Lease, Cost [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Derivative reclassifications Total expense, net Derivative, Gain (Loss) on Derivative, Net Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Gain from sale of divested operation Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Treasury stock, common shares (in shares) Treasury Stock, Common, Shares Equity Components [Axis] Equity Components [Axis] Fees receivable, net Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Gain on de-designated swaps Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Less: deferred financing fees and unamortized discounts Debt Issuance Costs, Line of Credit Arrangements, Net Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Percent of target bonus charges allocated to segments Segment Reporting Information, Percent of Target Bonus Charges Allocated to Segments Segment Reporting Information, Percent of Target Bonus Charges Allocated to Segments Termination Date Trading Arrangement Termination Date Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Divestiture Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] 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 Schedule of Goodwill [Table] Goodwill [Table] 2030 Notes Senior Notes Due 2030 [Member] Senior Notes Due 2030 Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Stock repurchase program, remaining authorized repurchase amount 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 Non-current deferred revenues recorded in Other liabilities Contract with Customer, Liability, Noncurrent Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Deferred compensation plan assets Plan Assets [Member] -- None. No documentation exists for this element. -- Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Revenues Revenues Gross cost Intangible Asset, Finite-Lived, before Accumulated Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Finite-lived Intangible Assets [Roll Forward] Intangible Asset, Finite-Lived [Roll Forward] Accounts payable and accrued and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Transferred at a point in time Transferred at Point in Time [Member] Goodwill [Roll Forward] Goodwill [Roll Forward] Liabilities and Stockholders’ (Deficit) Equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Schedule of Assets and Liabilities Measured to Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Disclosures Fair Value Disclosures [Text Block] Number of shares repurchased (in shares) Treasury Stock, Shares, Acquired Percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] PEO Name PEO Name Geographical [Axis] Geographical [Axis] Total contract liabilities Contract with Customer, Liability Interest Rate Swaps Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Foreign currency translation impact Intangible Asset, Finite-Lived, Foreign Currency Translation Gain (Loss) Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Reporting Unit [Domain] Reporting Unit [Domain] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Personnel expenses Labor and Related Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Total lease cost, net Lease, Cost Disposal Group Name [Axis] Disposal Group Name [Axis] Schedule of Debt Schedule of Debt [Table Text Block] Leases Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Basic income per share (in dollars per share) Earnings Per Share, Basic Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Purchases of treasury stock Cash paid for repurchased shares Payments for Repurchase of Common Stock Deferred revenues Deferred revenues (current liability) Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance Derivative Instruments, Gain (Loss) [Table Text Block] Long-term debt, net of deferred financing fees Long-Term Debt, Excluding Current Maturities Consulting Consulting Consulting [Member] -- None. No documentation exists for this element. -- Award Type [Axis] Award Type [Axis] Payments of deferred financing fees Payments of Financing Costs Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Fees receivable, net of allowances of $4,500 and $5,000, respectively Accounts Receivable, after Allowance for Credit Loss, Current Schedule of Share Repurchase Activity Class of Treasury Stock [Table Text Block] Accumulated earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Interest rate swaps – net change in deferred gain or loss Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent 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] Common Stock Common Stock [Member] Gain from sale of divested operation Gain from sale of divested operation Gain from sale of divested operation Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Operating lease cost Operating Lease, Cost Net income per share: Net Income Per Share, Basic And Diluted [Abstract] Net Income Per Share, Basic And Diluted Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Derivative Contract [Domain] Derivative Contract [Domain] Foreign currency translation impact Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total Liabilities and Stockholders’ (Deficit) Equity Liabilities and Equity Lease cost Variable Lease, Cost Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Schedule of Stock-based Compensation Expense by Award Type Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Other (expense) income, net Other Nonoperating Income (Expense) Treasury stock, average price paid per share (in dollars per share) Treasury Stock Average Price Paid Per Share Treasury Stock Average Price Paid Per Share. 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three 2026 (remaining six months) 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] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Common stock equivalents Common Stock Equivalents [Member] -- None. No documentation exists for this element. -- Gross cost, beginning balance Finite-Lived Intangible Assets, Excluding Foreign Currency Translation, Gross Finite-Lived Intangible Assets, Excluding Foreign Currency Translation, Gross Preferred stock, $0.01 par value, 5,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Deferred compensation plan liabilities Plan Liabilities [Member] -- None. No documentation exists for this element. -- Hedging Designation [Axis] Hedging Designation [Axis] Foreign currency forwards Foreign currency forward contracts Foreign Exchange Forward [Member] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total Assets Assets, Fair Value Disclosure Discontinued Operations and Disposal Groups [Abstract] Name Measure Name Numerator: Numerator: [Abstract] -- None. No documentation exists for this element. -- Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Goodwill impairment Goodwill, Impairment Loss United States and Canada United States And Canada [Member] -- None. No documentation exists for this element. -- Name Trading Arrangement, Individual Name Deferred commissions Other Deferred Costs, Net Cash and cash equivalents Cash and Cash Equivalent Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Company Selected Measure Amount Company Selected Measure Amount Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Depreciation and amortization Depreciation, Depletion and Amortization Entity Address, Address Line Two Entity Address, Address Line Two Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Cost of services and product development Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Principles of consolidation Consolidation, Policy [Policy Text Block] Other Product and Service, Other [Member] Retirement Eligible Employees Equity Award Retirement Eligible Employees Equity Award [Member] -- None. No documentation exists for this element. -- Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Cash receipts from sublease arrangements Proceeds from Lease Payment, Operating Activity AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income Net income Net income used for calculating basic and diluted income per share Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Interest expenses and other, net Interest And Other Nonoperating Income (Expense) Interest And Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of The Changes in Accumulated Other Comprehensive Loss by Component (Net Of Tax) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reduction in the carrying amount of operating lease right-of-use assets Operating Lease, Right-Of-Use Asset, Reduction In Carrying Amount Operating Lease, Right-Of-Use Asset, Reduction In Carrying Amount Schedule for Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Contract assets recorded in Prepaid expenses and other current assets Contract with Customer, Asset, before Allowance for Credit Loss Revenues: Revenues [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]