Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Other Non-Current Liabilities Other Noncurrent Liabilities [Member] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Research and development Research and Development Expense Changes in assets and liabilities, net of the effect of acquisitions and dispositions: Increase (Decrease) in Operating Capital [Abstract] Award Type Award Type [Domain] Fair Value as of Grant Date Award Grant Date Fair Value Remaining performance obligations, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Accounts Receivable and Allowance for Credit Losses Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Payments to acquire businesses, gross Payments to Acquire Businesses, Gross Components of Preliminary Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Analytics Analytics Analytics Segment [Member] Analytics. Long-term operating lease liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Long Term Operating Lease Labilities Business combination recognized identifiable assets acquired and liabilities assumed long-term operating lease labilities. Deferred tax liabilities Deferred Income Tax Liabilities, Net Prepaid and Other Assets Prepaid Expenses and Other Current Assets [Member] Acquired Intangible Assets Acquired Intangible Assets [Member] Acquired intangible assets. Insider Trading Policies and Procedures [Line Items] Remaining stock options outstanding exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Conversion to stock options (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Disaggregation Of Revenue [Line Items] Disaggregation of Revenue [Line Items] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Five Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] SHAREHOLDERS' EQUITY (DEFICIT) Equity [Text Block] 2022 Repurchase Program Two Thousand Twenty Two Repurchase Program [Member] Two Thousand Twenty Two Repurchase Program Other non-current assets Increase (Decrease) in Other Noncurrent Assets Expected dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Customer Customer [Axis] Current liabilities: Liabilities, Current [Abstract] U.S. federal Deferred Federal Income Tax Expense (Benefit) Preferred Stock (par value $0.01, 100,000,000 shares authorized, 0 shares issued) Preferred Stock, Value, Issued Subsequent Event Type Subsequent Event Type [Domain] Payment of dividends Payments of Ordinary Dividends, Common Stock Diluted (in USD per share) Earnings Per Share, Diluted Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Minimum investment return rate Defined Benefit Plan Minimum Investment Return Rate Defined benefit plan minimum investment return rate. 3.250% senior unsecured notes due 2033 Three Point Two Five Zero Percent Senior Unsecured Notes Due Two Thousand Thirty Three [Member] Three point two five zero percent senior unsecured notes due two thousand thirty three. Dividends paid in shares Adjustments To Additional Paid In Capital, Dividends Paid In Shares Adjustments To Additional Paid In Capital, Dividends Paid In Shares Line of Credit Line of Credit [Member] Trading Symbol Trading Symbol Acquisition of equity method investment Payments to Acquire Equity Method Investments Granted (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price 3.875% senior unsecured notes due 2031 Three Point Eight Seven Five Percent Senior Unsecured Notes Due Two Thousand Thirty One [Member] Three point eight seven five percent senior unsecured notes due two thousand thirty one. Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Accrued Compensation Accrued Compensation Policy Policy [Policy Text Block] Accrued compensation policy [Policy text block]. Total Asia & Australia Asia And Australia [Member] Asia and Australia. Other current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Prepaid income taxes Prepaid Taxes Shareholders' equity (deficit): Equity, Attributable to Parent [Abstract] Computation of Basic and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Recurring subscriptions Recurring Subscriptions [Member] Recurring subscriptions. 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Number of shares available for future grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Acquired technology and software Acquired Technology And Software [Member] Acquired technology and software. 2025 Long-Term Debt, Maturity, Year Two Stock options issued (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Operating Revenues by Reportable Segment Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Entity Small Business Entity Small Business 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Four All Other - Private Assets All Other Private Assets Segment [Member] All other private assets. 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Deferred revenue Contract with Customer, Liability, Current [Roll Forward] Contract with Customer, Liability, Current 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Intangible assets, net Total net intangible assets Finite-Lived Intangible Assets, Net Valuation Allowance of Deferred Tax Assets SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Employee compensation and benefit plans Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Average Price Paid Per Share (USD per Share) Shares Acquired, Average Cost Per Share Segment Reporting, Revenue Reconciling Item [Line Items] Segment Reporting, Revenue Reconciling Item [Line Items] Accumulated amortization Total accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Fair Value Debt Instrument, Fair Value Disclosure Summary of Components of Income Before Provision for Income Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Foreign exchange translation adjustment Finite Lived Intangible Assets Accumulated Amortization Foreign Exchange Translation Adjustment Finite lived intangible assets accumulated amortization foreign exchange translation adjustment. 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Conversion to common stock (in USD per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Conversions In Period Weighted Average Grant Date Fair Value Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested and unvested, conversions in period, weighted average grant date fair value. Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax PSOs Employee Stock Option [Member] Unrecognized tax benefits, interest on income tax expense (benefit) Unrecognized Tax Benefits, Interest on Income Taxes Expense Total operating expenses Costs and Expenses Income Tax Examination [Table] Income Tax Examination [Table] Maximum Maximum [Member] Compensation cost related to unvested share-based awards not yet recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Type Document Type Acquisitions Goodwill, Acquired During Period Right of use assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Right Of Use Assets Business combination recognized identifiable assets acquired and liabilities assumed right of use assets. 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Entity Tax Identification Number Entity Tax Identification Number Foreign exchange translation adjustment Goodwill, Foreign Currency Translation Gain (Loss) Total lease costs Lease, Cost Prior Credit Agreement Prior Credit Agreement [Member] Prior Credit Agreement Statistical Measurement Statistical Measurement [Axis] Balance Sheet Location Balance Sheet Location [Domain] Entity Interactive Data Current Entity Interactive Data Current Disaggregation Of Revenue [Table] Disaggregation of Revenue [Table] Number of Option Awards Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Acquisition of assets, net of cash acquired Payments to Acquire Assets, Investing Activities Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Measure: Measure [Axis] Name Outstanding Recovery, Individual Name ESG and Climate E S G And Climate Segment [Member] ESG and climate. 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Depreciation and amortization of property, equipment and leasehold improvements Depreciation, Depletion and Amortization Non-recurring Non Recurring [Member] Non-recurring. Furniture & fixtures Furniture and Fixtures [Member] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Long-lived assets Long-Lived Assets Impairment of goodwill Goodwill, Impairment Loss Less: valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Revenue recognized during period included in deferred revenue Contract with Customer, Liability, Revenue Recognized Valuation And Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Excise tax percentage Stock Repurchase Program, Excise Tax Percentage Stock Repurchase Program, Excise Tax Percentage Entity Emerging Growth Company Entity Emerging Growth Company United Kingdom UNITED KINGDOM Common Stock Issued Common Stock Issued [Member] Common stock issued. Other Non-Current Assets Other Noncurrent Assets [Member] Subtotal Deferred Tax Assets, Gross 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Open Market Purchases of Common Stock Open Market Purchases Of Common Stock [Member] Open market purchases of common stock. Title Trading Arrangement, Individual Title Common Stock Common Stock [Member] Number of shares grants in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Individual: Individual [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Decreases related to a lapse of applicable statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Income Statement Location Income Statement Location [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] 4.000% senior unsecured notes due 2029 Four Point Zero Zero Zero Percent Senior Unsecured Notes Due Two Thousand Twenty Nine [Member] Four point zero zero zero percent senior unsecured notes due two thousand twenty nine. Minimum Minimum [Member] Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Property, equipment and leasehold improvements, net Property, equipment and leasehold improvements, net Property, Plant and Equipment, Net Introduction And Basis Of Presentation [Line Items] Introduction And Basis Of Presentation [Line Items] Introduction and basis of presentation. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] ASSETS Assets [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Other Deferred Tax Assets, Other Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Deferred tax assets Deferred Income Tax Assets, Net Retirement Plan Type [Axis] Retirement Plan Type [Axis] Lessee Lease Description [Line Items] Lessee, Lease, Description [Line Items] Other Payments for (Proceeds from) Other Investing Activities Business acquisition, percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Retained Earnings Retained Earnings [Member] Current portion of long-term debt Long-Term Debt, Current Maturities Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Basic (in USD per share) Earnings Per Share, Basic Income tax effect Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent Class Of Treasury Stock [Table] Class of Treasury Stock [Table] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Net deferred tax assets Deferred Tax Assets, Net Fair value of the defined benefit plan assets Defined Benefit Plan, Plan Assets, Amount Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Proceeds from borrowings, inclusive of premium Proceeds from Issuance of Debt Other accrued liabilities Increase (Decrease) in Other Accrued Liabilities Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Acquisitions Goodwill, Purchase Accounting Adjustments Schedule Of Business Acquisitions By Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Acquired technology and software Technology-Based Intangible Assets [Member] Accounts payable Increase (Decrease) in Accounts Payable Capitalized expenses Deferred Tax Assets Capitalized Cost Deferred tax assets capitalized cost. Total Americas Americas [Member] Common Stock Outstanding [Line Items] Common Stock Outstanding [Line Items] Common stock outstanding. Reconciliation of Unrecognized Tax Benefits Summary of Income Tax Contingencies [Table Text Block] Entity Public Float Entity Public Float Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Debt instrument principal amount Principal amount outstanding Total debt Long-Term Debt, Gross All Trading Arrangements All Trading Arrangements [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Compensation Amount Outstanding Recovery Compensation Amount Schedule of Remaining Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Addition to credit loss expense Accounts Receivable, Credit Loss Expense (Reversal) Right of use assets Deferred Tax Liabilities, Leasing Arrangements Deferred taxes Deferred provision for income taxes (benefits) Deferred Income Tax Expense (Benefit) Subsequent Event Type Subsequent Event Type [Axis] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Other Other America Countries [Member] Other America Countries. 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Computer & related equipment Machinery and Equipment, Gross PSUs, RSUs and PSOs (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Domestic tax credits and incentives Effective Income Tax Rate Reconciliation, Tax Credit, Percent Document Period End Date Document Period End Date Deferred revenue Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Adoption Date Trading Arrangement Adoption Date Asset-based fees Asset Based Fees [Member] Asset-based fees. Treasury Stock Treasury Stock, Common [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Write-offs, net of recoveries Accounts Receivable, Allowance for Credit Loss, Writeoff Number of operating segments Number of Operating Segments Movement In Equity Shares [Roll Forward] Movement In Equity Shares [Roll Forward] Movement In Equity Shares Equity [Abstract] Equity [Abstract] Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Net assets acquired Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Granted (in USD per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Grants In Period Weighted Average Grant Date Fair Value Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested and unvested, grants in period, weighted average grant date fair value. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Foreign exchange translation adjustment Finite Lived Intangible Assets Net Accumulated Foreign Exchange Translation Adjustment Finite lived intangible assets net accumulated foreign exchange translation adjustment. Discount of Lack of Marketability Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount for Postvesting Restrictions Cash and cash equivalents (includes restricted cash of $3,878 and $368 at December 31, 2023 and December 31, 2022, respectively) Cash and Cash Equivalents, at Carrying Value Shares withheld for tax withholding (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Acquisition of a business, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Disclosure of remaining performance policy Revenue, Performance Obligation, Description of Timing Credit Facility Credit Facility [Domain] Total Number of Shares Repurchased (in shares) Shares repurchased under stock repurchase programs (in shares) Treasury Stock, Shares, Acquired Estimated Useful Lives Property, Plant and Equipment, Useful Life Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Income tax effect Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Internally developed capitalized software Software Development [Member] Cash and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Summary of Deferred Tax Asset Valuation Allowance Summary of Valuation Allowance [Table Text Block] Schedule of Change in Accounts Receivable and Deferred Revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Decreases related to settlements with taxing authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Additional paid in capital Additional Paid in Capital, Common Stock Additional Paid-in Capital Additional Paid-in Capital [Member] Document Annual Report Document Annual Report Balance Sheet Location Balance Sheet Location [Axis] Cover [Abstract] Cover [Abstract] Impact of Burgiss Transaction Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent SUBSEQUENT EVENTS Subsequent Events [Text Block] Amortization of debt origination fees Amortization of Debt Issuance Costs United States UNITED STATES Other non-current liabilities Other Liabilities, Noncurrent Total lease payments Lessee, Operating Lease, Liability, to be Paid Remaining performance obligations Revenue, Remaining Performance Obligation, Amount Other expense (income) Other Nonoperating Income (Expense) [Member] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Common Stock Outstanding [Table] Common Stock Outstanding [Table] Common Stock Outstanding [Table] Operating lease, extended term Lessee, Operating Lease, Renewal Term Equity Component Equity Component [Domain] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Other Deferred Tax Liabilities, Other Entity Current Reporting Status Entity Current Reporting Status Concentration Risk Type Concentration Risk Type [Domain] Operating income Operating Income (Loss) Total deferred tax liabilities Deferred Tax Liabilities, Gross Percentage of aggregate principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Dividends payable/paid (in shares) Common Stock Dividends, Shares Revenue Recognition [Line Items] Revenue Recognition [Line Items] Revenue recognition. Segments Segments [Axis] Property, Equipment and Leasehold Improvements Property, Plant and Equipment, Policy [Policy Text Block] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Weighted Average Remaining Life (Years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer relationships Customer Relationships [Member] Variable Rate [Domain] Variable Rate [Domain] Pay vs Performance Disclosure [Line Items] Entity Voluntary Filers Entity Voluntary Filers Statistical Measurement Statistical Measurement [Domain] Conversion to common stock (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Conversions In Period Share-based compensation arrangement by share-based payment award equity instruments other than options, vested and unvested, conversions in period. Underlying Security Market Price Change Underlying Security Market Price Change, Percent Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Operating lease, remaining lease terms Lessee, Operating Lease, Remaining Lease Term Debt Debt Disclosure [Text Block] Cash dividends (released)/deferred Increase (Decrease) In Deferred Dividends Increase decrease in deferred dividends. Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Adjusted EBITDA Operating Segment Profitability The operating profitability of each segment, reflecting adjusted earnings before interest, taxes, depreciation and amortization. Revolving Credit Facility Revolving Credit Facility [Member] Increase/(decrease) Increase (Decrease) In Contract With Customer, Liability, Current Increase (decrease) in contract with customer liability, current. MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] PSUs Performance Shares [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Accounts payable Accounts Payable, Current Computer & related equipment Computer Equipment [Member] Restatement Determination Date: Restatement Determination Date [Axis] Operating lease, options to terminate Lessee, Operating Lease, Option to Terminate Other non-current liabilities Increase (Decrease) in Other Noncurrent Liabilities Other expense (income), net Other expense (income), net Nonoperating Income (Expense) U.S. federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Commitments and Contingencies (see Note 6 and Note 10) Commitments and Contingencies Maturity of Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Work-in-process Construction in Progress, Gross Accumulated amortization excluding foreign exchange translation adjustment Finite Lived Intangible Assets Accumulated Amortization Excluding Foreign Exchange Translation Adjustment Finite lived intangible assets accumulated amortization excluding foreign exchange translation adjustment. Schedule Of Goodwill [Table] Schedule of Goodwill [Table] Geographical Geographical [Axis] Requisite service period of awards Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Foreign Plan Foreign Plan [Member] INCOME TAXES Income Tax Disclosure [Text Block] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Leases Lessee, Leases [Policy Text Block] Property, equipment and leasehold improvements, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Business Acquisition [Line Items] Business Acquisition [Line Items] Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Payment of contingent consideration Payment for Contingent Consideration Liability, Financing Activities Gain on remeasurement of equity method investment Gain on remeasurement of equity method investment Gain on remeasurement of equity method investment Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain PEO Total Compensation Amount PEO Total Compensation Amount Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Goodwill [Roll Forward] Goodwill [Roll Forward] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Shares repurchased (in shares) Beginning balance (in shares) Ending balance (in shares) Treasury Stock, Common, Shares Stock options outstanding (in shares) Vested and unvested stock option awards at beginning of period (in shares) Vested and unvested stock option awards at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Changes in Allowance for Doubtful Accounts Financing Receivable, Allowance for Credit Loss [Table Text Block] Net income Net income Net Income (Loss) Total current liabilities Liabilities, Current Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Company Selected Measure Name Company Selected Measure Name Blackrock Inc Blackrock Inc [Member] BlackRock Inc. LEASES Lessee, Operating Leases [Text Block] Long-term operating lease liabilities Increase Decrease In Long Term Operating Lease Liabilities Increase (decrease) in long-term operating lease liabilities. Acquired Finite Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] LIABILITIES AND SHAREHOLDERS' EQUITY (DEFICIT) Liabilities and Equity [Abstract] Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Vesting period of awards Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Weighted average amortization period of acquired intangible assets Estimated Useful Life Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Name Measure Name Name Forgone Recovery, Individual Name Goodwill Goodwill, Beginning balance Goodwill, Ending balance Goodwill Increases based on tax positions related to prior periods Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Operating Revenues by Geographic Area Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Lessee Lease Description [Table] Lessee, Lease, Description [Table] Underlying Securities Award Underlying Securities Amount Variable rate Tranche A Term Loans due 2027 Variable Rate Tranche A Term Loans Due Two Thousand Twenty Seven [Member] Variable rate tranche A term loans due two thousand twenty seven. Share-based Awards , vested or expected to vest (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Number Share-based compensation arrangement by share-based payment award, equity other than options, vested and expected to vest, outstanding, number. Accounts receivable Increase (Decrease) in Accounts Receivable Dividend declared per common share (in USD per share) Dividend declared per common share (in USD per share) Common Stock, Dividends, Per Share, Declared Excess share-based compensation Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Debt Instrument, Name Debt Instrument, Name [Domain] Unremitted foreign earnings Deferred Tax Liabilities, Undistributed Foreign Earnings Payment of debt issuance costs in connection with debt Payments of Debt Issuance Costs Income Statement Location Income Statement Location [Axis] Defined benefit plan, non-current liability Liability, Defined Benefit Plan, Noncurrent Deferred financing fees and premium remain unamortized Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Summary of Maturities of Operating Lease Liability Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Product and Service Product and Service [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Components of Lease Expense (Income), Weighted-Average Remaining Lease Term and Discount Rate, and Other Information Related to the Company's Operating Leases Lease, Cost [Table Text Block] Other Other Europe Middle East And Africa Countries [Member] Other Europe, Middle East and Africa Countries. Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Plan Name Plan Name [Domain] Interest expense Interest Expense Property, equipment and leasehold improvements in other accrued liabilities Capital Expenditures Incurred but Not yet Paid Foreign Derived Intangible Income (FDII), net of GILTI Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Net Of Global Intangible Low Taxed Income Effective income tax rate reconciliation foreign derived intangible income net of global intangible low-taxed income. Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Vested and unvested stock option awards at December 31, 2023 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Trading Arrangement: Trading Arrangement [Axis] Schedule of Interest Payments Due Attributable to Outstanding Indebtedness Interest Income and Interest Expense Disclosure [Table Text Block] Basis of Financial Statements and Use of Estimates Use of Estimates, Policy [Policy Text Block] Long-term Debt, Type Long-Term Debt, Type [Domain] Entity File Number Entity File Number Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five 2026 Long-Term Debt, Maturity, Year Three Decreases based on tax positions related to prior periods Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Auditor Firm ID Auditor Firm ID Amortization of intangible assets Amortization of Intangible Assets Entity Shell Company Entity Shell Company Business Acquisition, Acquiree Business Acquisition, Acquiree [Domain] Restatement Determination Date Restatement Determination Date Credit Agreement Credit Agreement [Member] Credit Agreement Income taxes payable Increase (Decrease) in Income Taxes Payable Increases based on tax positions related to the current period Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalent and restricted cash, end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Variable lease costs Variable Lease, Cost Operating lease expenses Operating Lease, Cost Common stock, shares issued (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Issued Treasury shares, at cost (54,726,120 and 53,663,016 common shares held at December 31, 2023 and December 31, 2022, respectively) Treasury Stock, Common, Value Carrying value Long-Term Debt 2027 Long-Term Debt, Maturity, Year Four Schedule of Amortization Expense Related to Intangible Assets by Category Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Beginning balance Ending balance SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Compensation cost related to unvested share-based awards not yet recognized, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule Of Acquired Finite Lived Intangible Asset By Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Domestic Tax Authority Domestic Tax Authority [Member] Short-term lease costs Short-Term Lease, Cost Intangible assets: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Total Pension and Other Postretirement Benefits Cost (Reversal of Cost) Subsequent Event [Table] Subsequent Event [Table] Operating lease, early termination term Lessee Operating Lease Early Termination Term Lessee operating lease early termination term. Subsequent Event Subsequent Event [Member] Net operating loss carryforwards Operating Loss Carryforwards Property, equipment and leasehold improvements, net Deferred Tax Liabilities Property Equipment And Leasehold Improvements Net Deferred Tax Liabilities Property Equipment And Leasehold Improvements Net Unearned revenue Deferred Tax Assets, Deferred Income Cumulative adjusted EPS performance goal weight Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Cumulative Adjusted Earnings Per Common Share Performance Goal Weight Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Cumulative Adjusted Earnings Per Common Share Performance Goal Weight Schedule of Gross Carrying and Accumulated Amortization Amounts Related to Company's Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Interest expense carryforwards Interest carryforwards Deferred Tax Asset, Interest Carryforward Income Statement [Abstract] Income Statement [Abstract] Common stock issued (in shares) Stock Issued During Period, Shares, New Issues Canceled (in USD per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Forfeited In Period Weighted Average Grant Date Fair Value Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested and unvested, forfeited in period, weighted average Grant date fair value. Leasehold improvements Leasehold Improvements, Gross Prepaid income taxes Increase (Decrease) in Prepaid Taxes Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Senior Unsecured Notes Senior Unsecured Notes [Member] Senior unsecured notes. Defined benefit plan, assets Assets for Plan Benefits, Defined Benefit Plan Income Tax Examination [Line Items] Income Tax Examination [Line Items] Equity method investment Equity Method Investments Post-vesting restriction period Share Based Compensation Arrangement By Share Based Payment Award Post Vesting Restriction Period Share based compensation arrangement by share based payment award post vesting restriction period. Lease liabilities Deferred Tax Assets Lease Liabilities Deferred tax assets lease liabilities. Other non-current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total Shareholder Return Amount Total Shareholder Return Amount Repurchase of common stock held in treasury Payments for Repurchase of Common Stock Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Non U.S. Deferred Foreign Income Tax Expense (Benefit) Windfall tax benefits for share-based compensation expense related to share-based awards and stock options Employee Service Share Based Compensation Windfall Tax Benefit From Compensation Expense Employee service share based compensation windfall tax benefit from compensation expense. Bonus Award Bonus Award [Member] Bonus award. Segments Segments [Domain] Write-off of internally developed capitalized software Write Off Of Software Development [Member] Write off of software development. Retained earnings Retained Earnings (Accumulated Deficit) Current assets: Assets, Current [Abstract] Leases [Abstract] Leases [Abstract] Deferred tax assets: Components of Deferred Tax Assets [Abstract] Entity Address, State or Province Entity Address, State or Province Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Schedule Of Revenues From External Customers And Long Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Secured Overnight Financing Rate (SOFR) Vested and unvested Share-based Awards at the beginning of period (in shares) Vested and unvested Share-based Awards at the end of period (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Number Share-based compensation arrangement by share-based Payment award, equity instruments other than options, vested and unvested, number. Foreign currency translation adjustments, net Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Customer Customer [Domain] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Present value of lease liabilities Operating Lease, Liability Net carrying value excluding foreign exchange translation adjustment Finite Lived Intangible Assets Net Excluding Accumulated Foreign Exchange Translation Adjustment Finite lived Intangible assets net excluding accumulated foreign exchange translation adjustment. INTRODUCTION AND BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Prepaid and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Existing interest in acquiree, percentage Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage Additions charged to cost and expenses SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense 401(k) and other defined contribution plans Defined Contribution Plan, Cost All Executive Categories All Executive Categories [Member] Long-term deferred revenue Contract with Customer, Liability, Noncurrent Penalties recognized during the year Unrecognized Tax Benefits, Income Tax Penalties Expense Plan Name Plan Name [Axis] Debt Disclosure [Abstract] Number of reportable segments Number of Reportable Segments Earnings per share: Earnings Per Share [Abstract] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Common stock (par value $0.01; 750,000,000 common shares authorized; 133,817,332 and 133,623,005 common shares issued and 79,091,212 and 79,959,989 common shares outstanding at December 31, 2023 and December 31, 2022, respectively) Common Stock, Value, Issued Redemption price Debt Instrument, Redemption Price, Percentage Long-term Debt Long Term Debts [Member] Long term debts. Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Amortization of right of use assets Operating Lease, Right-of-Use Asset, Periodic Reduction Pension and other post-retirement adjustments Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Long-Lived Assets by Geographic Area Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] Schedule Of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Summary of Vested and Unvested Share-Based Awards Activity Schedule Of Vested And Unvested Share Based Awards Activity Table [Table Text Block] Schedule of vested and unvested share-based awards activity. Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Accounts receivable (net of allowances of $3,968 and $2,652 at December 31, 2023 and December 31, 2022, respectively) Opening Closing Accounts Receivable, after Allowance for Credit Loss All Individuals All Individuals [Member] Other expense (income) Other Nonoperating Income (Expense) Entity Filer Category Entity Filer Category Schedule of Company's Common Stock Repurchases Made on Open Market Class of Treasury Stock [Table Text Block] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date Repurchase program authorizing the purchase of shares (in shares) Stock Repurchase Program, Authorized Amount Reconciliation of U.S. Federal Statutory Income Tax Rate to the Effective Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Unrecognized tax benefits Beginning balance Ending balance Unrecognized Tax Benefits Income Tax Authority Income Tax Authority [Axis] PEO Name PEO Name Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Base Rate Loans Base Rate [Member] Restricted cash, current Restricted Cash, Current Schedule of Change to Company's Goodwill Schedule of Goodwill [Table Text Block] Deductions SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction 3.625% senior unsecured notes due 2031 Three Point Six Two Five Percent Senior Unsecured Notes Due Two Thousand Thirty One [Member] 3.625% Senior Unsecured Notes Due 2031 [Member]. Prepaid Income Taxes Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Prepaid Taxes Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Prepaid Taxes Other accrued liabilities Other Accrued Liabilities, Current Valuation And Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Debt instrument interest rate Debt Instrument, Interest Rate, Stated Percentage Accrued compensation and related benefits Increase (Decrease) in Employee Related Liabilities Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Aggregate Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value Total shareholders' equity (deficit) Beginning balance Ending balance Equity, Attributable to Parent Share-based Awards , vested or expected to vest, weighted average price (in USD per share) Share Based Compensation Arrangement By Share Based Payment Awards Vested And Expected To Vest Weighted Average Price Share based compensation arrangement by share based payment awards vested and expected to vest weighted average price. Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Cumulative revenue performance goal weight Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Cumulative Revenue Performance Goal Weight Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Cumulative Revenue Performance Goal Weight Redemption description Debt Instrument, Redemption, Description Finite-Lived Intangible Assets, Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] Concentration Risk Type Concentration Risk Type [Axis] Term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Subsequent Events [Abstract] Subsequent Events [Abstract] Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Pension Deferred Tax Liabilities, Compensation And Benefits, Pensions Deferred Tax Liabilities, Compensation And Benefits, Pensions Schedule Of Introduction And Basis Of Presentation [Table] Schedule Of Introduction And Basis Of Presentation [Table] Schedule Of Introduction And Basis Of Presentation [Table] Common stock issued to Directors and (held in)/released from treasury Treasury Stock Value Issued To Directors Value of common stock issued, but undelivered, to directors. The timing of the delivery of the shares has been deferred until a future date. Interest rate on TLA Facility Debt Instrument, Interest Rate, Effective Percentage Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Estimates of useful lives Estimated Useful Lives Finite-Lived Intangible Asset, Useful Life 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Vested and unvested stock option awards at beginning of period (in USD per share) Vested and unvested stock option awards at ending of period (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Foreign Tax Authority Foreign Tax Authority [Member] City Area Code City Area Code Product and Service Product and Service [Axis] EARNINGS PER COMMON SHARE Earnings Per Share [Text Block] Revenue from Contract with Customer, Product and Service Benchmark Revenue from Contract with Customer, Product and Service Benchmark [Member] Document Fiscal Year Focus Document Fiscal Year Focus Geographical Geographical [Domain] Interest payment frequency Debt Instrument, Frequency of Periodic Payment Software and Software Development Costs Software and Software Development Costs [Member] Share Repurchase Program Share Repurchase Program [Domain] Exercise Price Award Exercise Price Unvested stock option awards expected to vest (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Gross carrying value excluding foreign exchange translation adjustment Finite Lived Intangible Assets Gross Excluding Accumulated Foreign Exchange Translation Adjustment Finite lived intangible assets gross excluding accumulated foreign exchange translation adjustment. Cash dividends declared Dividends, Common Stock, Cash Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Impairment related to sublease of leased property Impairment Related To Sublease Of Leased Property Impairment related to sublease of leased property. Canceled (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Forfeited In Period Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested and unvested, forfeited in period. Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Cash paid for income taxes, net of refunds received Income Taxes Paid, Net Summary of Share-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Total liabilities and shareholders' equity (deficit) Liabilities and Equity Other non-current assets Other Assets, Noncurrent Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Supplemental disclosure of non-cash financing activities Supplemental Disclosures Of Non Cash Financing Activities [Abstract] Supplemental disclosures of non cash financing activities. 3.625% senior unsecured notes due 2030 Three Point Six Two Five Percent Senior Unsecured Notes Due Two Thousand Thirty [Member] Three point six two five percent senior unsecured notes due two thousand thirty. Risk free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Right of use assets Operating Lease, Right-of-Use Asset Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Non U.S. Current Foreign Tax Expense (Benefit) Trove Trove Research Ltd [Member] Trove Research Ltd Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Arrangement Duration Trading Arrangement Duration Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Segment Profitability and Reconciliation to Net Income Schedule of Segment Reporting Information, by Segment [Table Text Block] Fair value at acquisition date Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Business Combinations [Abstract] Business Combinations [Abstract] Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Termination Date Trading Arrangement Termination Date Furniture & fixtures Furniture and Fixtures, Gross Common stock, shares authorized (in shares) Common Stock, Shares Authorized Acquisition-related integration and transaction costs Business Combination Integration Related Costs And Transaction Costs Business combination integration related costs and transaction costs. Net operating loss carryforwards, tax value Operating Loss Carryforwards Tax Value Operating loss carryforwards, tax value. Foreign exchange translation adjustment Finite Lived Intangible Assets Gross Accumulated Foreign Exchange Translation Adjustment Finite lived intangible assets gross accumulated foreign exchange translation adjustment. Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Award Timing Disclosures [Line Items] Cash dividends declared, but not yet paid Dividends Payable Total fair value of Share-Based Awards converted or vested to common stock Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Supplemental disclosure of non-cash investing activities Supplemental Disclosures Of Non Cash Investing Activities [Abstract] Supplemental disclosures of non cash investing activities. Granted (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Grants In Period Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested and unvested, grants in period. Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Income Taxes Income Tax, Policy [Policy Text Block] Prepaid and other assets Prepaid Expense and Other Assets, Current 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Three Insider Trading Arrangements [Line Items] Vested and unvested stock option awards at December 31, 2023 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Proprietary data Intellectual Property [Member] Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] Change in tax rates applicable to non-U.S. earnings Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Two Adjustment to Compensation, Amount Adjustment to Compensation Amount Cost of revenues Cost of Sales [Member] Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Schedule of Employee Benefit Expense by Cost, Type and Location Schedule of Costs of Retirement Plans [Table Text Block] Auditor Name Auditor Name Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Reconciliation Of Revenue From Segments To Consolidated [Table] Reconciliation of Revenue from Segments to Consolidated [Table] Internal Use Software Internal Use Software, Policy [Policy Text Block] Entity Central Index Key Entity Central Index Key Total share-based compensation expense Share-Based Payment Arrangement, Expense Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Total gross intangible assets Finite-Lived Intangible Assets, Gross Burgiss Group Limited Liability Company Burgiss Group Limited Liability Company [Member] Burgiss group limited liability company. Aggregate fair value Share Based Compensation Arrangement By Share Based Payment Award Outstanding Aggregate Fair Value Share based compensation arrangement by share based payment award outstanding aggregate fair value. Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Income Tax Authority Income Tax Authority [Domain] Accrued compensation and related benefits Employee-related Liabilities, Current Name Trading Arrangement, Individual Name Other comprehensive (loss) income, net of tax Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Disaggregation of Operating Revenue Disaggregation of Revenue [Table Text Block] Common stock issued Stock Issued During Period, Value, New Issues Defined benefit plan, net pension liability Liability, Defined Benefit Pension Plan Operating revenues Revenue from Contract with Customer, Excluding Assessed Tax Long-term Debt, Type Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag Intangible assets Deferred Tax Assets, Goodwill and Intangible Assets Vested and unvested Share-based Awards (in USD per share) Vested and unvested Share-based Awards (in USD per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Weighted Average Grant Date Fair Value Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Long-term debt Long-Term Debt, Excluding Current Maturities Leasehold improvements Leasehold Improvements [Member] Selling and marketing Selling and Marketing Expense [Member] Diluted (in USD per share) Diluted weighted average common shares outstanding (in USD per share) Weighted Average Number of Shares Outstanding, Diluted Unvested stock option awards expected to vest Share-Based Compensation Arrangement By Share-Based Payment Award, Option, Nonvested, Weighted Average Remaining Contractual Term Share-Based Compensation Arrangement By Share-Based Payment Award, Option, Nonvested, Weighted Average Remaining Contractual Term Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Other Other Asia And Australia Countries [Member] Other Asia and Australia Countries. Common Stock Outstanding Common Stock Outstanding [Member] Common stock outstanding. Capital expenditures Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Operating lease, options to extend Lessee, Operating Lease, Option to Extend Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Conversion to stock options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares Share Repurchase Program Share Repurchase Program [Axis] Compensation payable in common stock APIC, Share-Based Payment Arrangement, Increase for Cost Recognition 2028 Long-Term Debt, Maturity, Year Five Non-NEOs Non-NEOs [Member] Treasury Stock Treasury Stock Policy [Policy Text Block] Treasury Stock [Policy Text Block] Pension related net period benefit expense Pension Plan Pension Plan [Member] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Debt Instrument [Line Items] Debt Instrument [Line Items] Basic (in USD per share) Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Amount of accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Unvested stock option awards expected to vest Share-Based Compensation Arrangement By Share-Based Payment Award, Option, Nonvested, Aggregate Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Option, Nonvested, Aggregate Intrinsic Value Intangible assets Deferred Tax Liabilities, Intangible Assets