Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Domestic Income Tax Jurisdiction, Domestic Federal [Member] Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Amortization of other assets Amortization of other assets Other Asset Amortization Amortization of other assets Adjustment to Compensation, Amount Adjustment to Compensation Amount Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Estimated Amortization Expenses of Intangible Assets Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Accrued expenses not currently deductible Deferred Tax Assets, Tax Deferred Expense Employee compensation and benefits Employee-related Liabilities, Current OTHER NON-CURRENT LIABILITIES Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent [Text Block] Trademark Trademarks [Member] DEFERRED CLIENT CONVERSION AND START-UP COSTS Deferred Costs [Text Block] Deferred Costs Domestic state and local income taxes, net of Federal tax effect State taxes, net of federal tax Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Accumulated earnings attributable to foreign subsidiaries, not permanently reinvested outside of the United States Undistributed Earnings of Foreign Subsidiaries, Not Permanently Reinvested Outside United States Undistributed Earnings of Foreign Subsidiaries, Not Permanently Reinvested Outside United States Warrants exercised (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Schedule of Deferred Client Conversion and Start-up Costs Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Total current Current Income Tax Expense (Benefit) Charged to other accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Software Technology Software Technology [Member] Software Technology Stock-based compensation - excess tax benefits (“ETB”) Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Effective Income Tax Rate Reconciliation, Percent [Abstract] Tax rate reconciliation (percent) Effective Income Tax Rate Reconciliation, Percent [Abstract] Other Deferred Tax Liabilities, Other Leases [Abstract] Intangible Asset, Finite-Lived, Acquired [Line Items] Intangible Asset, Finite-Lived, Acquired [Line Items] Foreign tax effects Foreign rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount SORP Supplemental Officer Retirement Plan [Member] Supplemental Officer Retirement Plan [Member] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Intangible assets, net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Graded Vesting Share-Based Payment Arrangement, Tranche One [Member] Foreign Deferred Foreign Income Tax Expense (Benefit) Retirement Benefits [Abstract] Retirement Benefits [Abstract] Accumulated earnings attributable to foreign subsidiaries, permanently reinvested outside of the United States Undistributed Earnings of Foreign Subsidiaries, Permanently Reinvested Outside United States Undistributed Earnings of Foreign Subsidiaries, Permanently Reinvested Outside United States Long-term investments Long-Term Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Internal Use Software Software, Internal-Use [Policy Text Block] Fiscal 2026 Senior Notes Fiscal 2026 Senior Notes [Member] Fiscal 2026 Senior Notes Number of reportable segments Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Earnings before income taxes Income (Loss) Attributable to Parent, before Tax 2028 Minimum Commitment Year Two Minimum Commitment Year Two Crypto Asset [Domain] Crypto Asset [Domain] Customer Relationships Customer Relationships [Member] Fiscal 2021 Term Loans Tranche 1 Fiscal 2021 Term Loans Tranche1 [Member] Fiscal 2021 Term Loans Tranche1 Cash flow hedge loss to be reclassified within twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Entity Address, City or Town Entity Address, City or Town Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent Granted RSUs (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] O 2027 Q1 Dividends O 2027 Q1 Dividends [Member] O 2027 Q1 Dividends Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Customer deposits Contract With Customer, Liability, Current, Customer Deposits Contract With Customer, Liability, Current, Customer Deposits Intangible Assets, net Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Components: Components of Deferred Tax Assets and Liabilities [Abstract] Number of markets (more than) Number of Markets in which Entity Operates Number of Markets in which Entity Operates Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Tax Credits and Foreign-Derived Intangible Income Deduction (“FDII”) Effective Income Tax Rate Reconciliation, FDDEI, Percent Revenue Benchmark Revenue Benchmark [Member] United States UNITED STATES Other direct expenses Other Expenses Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Percent ROU assets Operating Lease, Right-Of-Use Asset, Noncurrent Operating Lease, Right-Of-Use Asset, Noncurrent Dividends [Domain] Dividends [Domain] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Impairment of Long-Lived Assets Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block] Schedule of Financial Data Segment Reporting Information Segment Reporting [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Total other comprehensive income (loss), net Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Summary of Contingent Consideration Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Document Period End Date Document Period End Date Canton Strategic Holdings Canton Strategic Holdings [Member] Canton Strategic Holdings Dividends payable (in dollars per share) Dividends Payable, Amount Per Share Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Principal amount Total Debt Instrument, Face Amount Schedule of Supplemental Balance Sheet Information Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Weighted-Average Remaining Useful Life (Years) Intangible Assets, Weighted Average Useful Life Intangible Assets, Weighted Average Useful Life Cliff Vesting - Year Four Share-Based Compensation Award, Tranche Six [Member] Share-based Compensation Award, Tranche Six [Member] Debt instrument, term Debt Instrument, Term Options And Restricted Stock Units (RSUs) Options And Restricted Stock Units (RSUs) [Member] Options And Restricted Stock Units (RSUs) Treasury stock, at cost: 40.4 and 37.3 shares, respectively Treasury Stock, Common, Value Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Net operating losses Deferred Tax Assets, Operating Loss Carryforwards Audit Information [Abstract] Audit Information LDI-MAP, LLC LDI-MAP, LLC [Member] LDI-MAP, LLC Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Investor Communication Solutions Investor Communication Solutions [Member] Investor communication solutions [member] U.S. Federal Income Tax Paid, Federal, after Refund Received Impact of foreign currency exchange Capitalized Contract Costs, Foreign Currency Exchange Adjustment Capitalized Contract Costs, Foreign Currency Exchange Adjustment Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] SOFR, Step Up Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, Step Ups [Member] Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, Step Ups Revolving Credit Facilities Revolving Credit Facilities [Member] Revolving Credit Facilities [Member] Net increase in contingent consideration liability Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Operating lease liabilities - Current Operating lease liabilities Operating Lease, Liability, Current Signal Agency Limited Signal Agency Limited [Member] Signal Agency Limited WEIGHTED-AVERAGE SHARES OUTSTANDING Earnings Per Share [Text Block] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Pension and post retirement liability adjustments tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent Trading Symbol Trading Symbol Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] Unrealized gains Crypto Asset, Unrealized Gain (Loss), Nonoperating Capital expenditures Payments to Acquire Property, Plant, and Equipment Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Unrecognized Tax Benefits [Roll Forward] Accrued taxes Accrued Income Taxes, Current Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] 2029 Minimum Commitment Year Three Minimum Commitment Year Three Foreign currency impact on contingent consideration liability Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Foreign Currency Translation Adjustment Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Foreign Currency Translation Adjustment Remaining commitment amount under agreement Long-Term Purchase Commitment, Amount Tax Credits and Foreign-Derived Intangible Income Deduction (“FDII”) Effective Income Tax Rate Reconciliation, FDDEI, Amount Annual facility fee (as basis points) Line of Credit Facility, Commitment Fee Percentage Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Schedule of Activity Related to Unrecognized Tax Benefits Summary Of Unrecognized Tax Benefits [Table Text Block] Summary Of Unrecognized Tax Benefits [Table Text Block] Cash Flows From Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Accrued dividend payable Dividends Payable, Current Defined benefit plan, maximum age eligibility Defined Benefit Plan, Age Eligibility, Maximum Defined Benefit Plan, Age Eligibility, Maximum Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Estimated useful lives of assets Property, Plant, and Equipment, Useful Life Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Other Deferred Tax Assets, Other Net operating loss carryforwards Operating Loss Carryforwards Stock option award vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Capital markets Recurring Fee Revenue Capital Markets [Member] Recurring Fee Revenue Capital Markets Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Fiscal 2020 Senior Notes Fiscal 2020 Senior Notes [Member] Fiscal 2020 Senior Notes Segment, Continuing Operations Continuing Operations [Member] Summary of Level 3 Financial Assets Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Deferred Data Center Costs Deferred Charges, Policy [Policy Text Block] Other intangibles Other intangibles Other Intangible Assets [Member] Deferred tax liabilities: Deferred Tax Liabilities, Net [Abstract] Operating cash outflows from operating leases Operating Lease, Payments Non-current income taxes Taxes, Non-Income, Non-Current Taxes, Non-Income, Non-Current Award Timing Predetermined Award Timing Predetermined [Flag] Intrinsic values of stock options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Derivative asset Derivative Asset, Noncurrent Total Provision for income taxes Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Common stock equivalents (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements CQG, Inc. CQG, Inc. [Member] CQG, Inc. Digital Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Benefit expense Postemployment Benefits, Period Expense Performance-based Restricted Stock Units Performance Based Restricted Stock Units [Member] Performance based restricted stock units [member] Fair value of fixed-rate notes Long-Term Debt, Fair Value Compensation and benefits not currently deductible Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits PAYABLES AND ACCRUED EXPENSES Other Liabilities Disclosure [Text Block] Vesting [Domain] Vesting [Domain] Plan Name [Domain] Plan Name [Domain] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Operating lease ROU assets Operating Lease, Right-of-Use Asset Concentration Risk Type [Domain] Concentration Risk Type [Domain] Lease renewal term Lessee, Operating Lease, Renewal Term Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Capitalized Contract Cost [Roll Forward] Capitalized Contract Cost [Roll Forward] Capitalized Contract Cost [Roll Forward] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Schedule of Capitalized Contract Costs Capitalized Contract Cost [Table Text Block] Accrual of unpaid stock repurchase excise tax Accrual For Unpaid Stock Repurchase Excise Tax Accrual For Unpaid Stock Repurchase Excise Tax Outstanding borrowings under lines of credit Long-Term Line of Credit Crypto Asset, Realized and Unrealized Gain (Loss), Nonoperating, Statement of Income or Comprehensive Income [Extensible Enumeration] Crypto Asset, Realized and Unrealized Gain (Loss), Nonoperating, Statement of Income or Comprehensive Income [Extensible Enumeration] Expiration Date Trading Arrangement Expiration Date Schedule of Canton Coin Holding Crypto Asset, Holding [Table Text Block] Foreign Current Foreign Tax Expense (Benefit) 2030 Long-Term Debt, Maturity, Year Four Hedging Relationship [Axis] Hedging Relationship [Axis] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] U.S. State Current State and Local Tax Expense (Benefit) Money market funds Cash and Cash Equivalents, Fair Value Disclosure Estimate of possible loss Loss Contingency, Estimate of Possible Loss Buildings and Building Improvements Building and Building Improvements [Member] Exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] The Gratuity Plan Postemployment Benefit Obligations [Member] Postemployment Benefit Obligations Cash Flows From Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Entity Voluntary Filers Entity Voluntary Filers Unrecognized compensation cost related to non-vested stock options Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] SERP Supplemental Executive Retirement Plan [Member] Supplemental Executive Retirement Plan [Member] Segments [Domain] Segments [Domain] Quantity of Coins Crypto Asset, Number of Units Property, Plant and Equipment Property, Plant, and Equipment [Policy Text Block] Accrued interest and penalties related to uncertain tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense BORROWINGS Debt Disclosure [Text Block] Business Combination [Table] Business Combination [Table] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount AdvisorTarget AdvisorTarget [Member] AdvisorTarget Business Acquisition [Axis] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Total operating expenses Costs and Expenses Thereafter Long-Term Debt, Maturity, after Year Five Interest rate, senior notes Debt Instrument, Interest Rate, Stated Percentage Total stockholders’ equity Beginning balance Ending balance Stockholders' equity Equity, Attributable to Parent Stock-based compensation APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Assets Assets [Abstract] Insider Trading Policies and Procedures [Line Items] Accumulated earnings attributable to foreign subsidiaries Undistributed Earnings of Foreign Subsidiaries, Permanently And Not Permanently Reinvested Outside United States Undistributed Earnings of Foreign Subsidiaries, Permanently And Not Permanently Reinvested Outside United States Vesting Type [Domain] Vesting Type [Domain] [Domain] for Vesting Type [Axis] Fair value adjustments Goodwill, Measurement Period Adjustment Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Other current assets: Other Current Asset [Abstract] Other Current Asset [Abstract] Vested Stock Options Vested Stock Options [Member] Vested Stock Options [Member] Percentage of principal amount at issuance Debt Instrument, Issuance, Percentage of Principal Amount Debt Instrument, Issuance, Percentage of Principal Amount Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Deferred income taxes Total deferred Deferred Income Tax Expense (Benefit) Interest expense, net Interest expense, net Interest Income (Expense), Nonoperating Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items] Long-term broker fees Prepaid Expense, Noncurrent Anti-diluted options related to the purchase of common stock (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Changes in Goodwill Goodwill [Table Text Block] Auditor Location Auditor Location Goodwill, gross Goodwill, Gross Entity Central Index Key Entity Central Index Key Fiscal 2025 Revolving Credit Facility Multicurrency Tranche Fiscal 2025 Revolving Credit Facility Multicurrency Tranche [Member] Fiscal 2025 Revolving Credit Facility Multicurrency Tranche Equity [Abstract] Equity [Abstract] 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] U.S. Federal statutory tax rate Provision for income taxes at U.S. statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Other current assets Other Current Assets [Policy Text Block] Other Current Assets Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Restricted units, fair value Crypto Asset, Fair Value, Restricted Designated as Hedging Instrument Designated as Hedging Instrument [Member] Schedule of Components of Provision for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Income tax reconciliation Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Executive Retiree Health Insurance Plan Postretirement Health Coverage [Member] Schedule of Revenues and Assets by Geographic Area Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block] Number of Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Variable Rate [Domain] Variable Rate [Domain] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Settlement of preexisting relationship Business Combination, Separately Recognized Transactions, Settlement of Preexisting Relationship Business Combination, Separately Recognized Transactions, Settlement of Preexisting Relationship Dividends paid Payments of Dividends Balance at beginning of period Balance at end of period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Percentage of coins locked Subscription Agreement, Lifetime And Earned Digital Assets, Percentage Locked Subscription Agreement, Lifetime And Earned Digital Assets, Percentage Locked Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Amortization period of unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Acquisition related contingencies Business Combination, Contingent Consideration, Liability, Noncurrent Securities Marketable Securities, Noncurrent Statement [Line Items] Statement [Line Items] Total assets Assets Assets Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Schedule of Components of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Rabbi trust assets Defined Benefit Plan, Plan Assets, Amount Digital assets Deferred Tax Liabilities, Derivatives Operating Segments Operating Segments [Member] Cross Currency Swap and Treasury-Locks Deferred Tax Assets, Derivative Instruments Carrying amount of non-marketable securities Equity Securities without Readily Determinable Fair Value, Amount STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Foreign tax effects Foreign rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent PEO PEO [Member] 2028 Long-Term Debt, Maturity, Year Two Acquired software technology Acquired software technology Acquired Software Technology [Member] Acquired Software Technology [Member] Other Future Minimum Commitments Other Future Minimum Commitments [Member] Other Future Minimum Commitments Securities Marketable Securities, Current Other non-current liabilities Total Other Liabilities, Noncurrent Goodwill Goodwill, net Goodwill Retirement Plan Type [Axis] Retirement Plan Type [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Operating lease liabilities - Non-current Operating lease liabilities Operating Lease, Liability, Noncurrent Retained Earnings Retained Earnings [Member] Unremitted earnings Deferred Tax Liabilities, Undistributed Foreign Earnings Revolving Credit Facility Revolving Credit Facility [Member] Internal use software Software, In-Development, Internally Developed, and Purchased [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Amortization expense for intangible assets Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Revenues Revenues Revenue from Contract with Customer, Excluding Assessed Tax Unused available capacity Line of Credit Facility, Remaining Borrowing Capacity Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Information Technology Services Agreement Amended and Restated IT Services Agreement Information Technology Services Agreement [Member] Information Technology Services Agreement [Member] Domestic state and local income taxes, net of Federal tax effect State taxes, net of federal tax Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Schedule of Future Principal Payments on Outstanding Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] A W S Cloud Agreement A W S Cloud Agreement [Member] A W S Cloud Agreement Foreign Income Tax Jurisdiction, Foreign [Member] Increase (decrease) in Provision for income taxes from: Effective Income Tax Reconciliation, Increase (Decrease) In Provision For Income Taxes [Abstract] Effective Income Tax Reconciliation, Increase (Decrease) In Provision For Income Taxes [Abstract] Fiscal 2025 Revolving Credit Facility Fiscal 2025 Revolving Credit Facility [Member] Fiscal 2025 Revolving Credit Facility Auditor Firm ID Auditor Firm ID Operating income Operating Income (Loss) Foreign Income Tax Paid, Foreign, after Refund Received ACQUISITIONS Business Combination [Text Block] Total ICS Event-driven revenues Event-Driven Revenue, Investor Communication Solutions [Member] Event-Driven Revenue, Investor Communication Solutions [Member] Pre-funded warrants Purchase Warrant, Noncurrent Purchase Warrant, Noncurrent Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Write-down of long lived assets and related charges Asset, Impairment Loss Operating lease ROU assets extensible list Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock, shares issued (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Issued Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value BASIS OF PRESENTATION Business Description and Basis of Presentation [Text Block] Time Based And Performance Based Restricted Stock Units Time Based And Performance Based Restricted Stock Units [Member] Time Based And Performance Based Restricted Stock Units OTHER NON-CURRENT ASSETS Other Assets Disclosure [Text Block] Weighted-average fair value (in dollars) Share Based Compensation Arrangement By Share Based Payment Award Fair Value Share Based Compensation Arrangement by Share Based Payment Award Fair Value CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) BY COMPONENT Comprehensive Income (Loss) Note [Text Block] Accounts receivable, net Increase (Decrease) in Accounts Receivable Deferred client conversion and start-up costs Deferred Costs, Noncurrent Product and Service [Domain] Product and Service [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred tax valuation allowance SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Deferred taxes Long-term deferred tax liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Defined contribution saving plan costs recorded Defined Contribution Plan, Cost 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Other Commitments [Axis] Other Commitments [Axis] Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Pre-tax loss Derivative, Loss on Derivative Intangible assets Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived U.S. Federal statutory tax rate Provision for income taxes at U.S. statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] ERSP Executive Retirement And Savings Plan [Member] Executive Retirement And Savings Plan [Member] Stock options expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Fiscal 2021 Revolving Credit Facility Fiscal 2021 Revolving Credit Facility [Member] Fiscal 2021 Revolving Credit Facility Total liability recognized Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Entity Public Float Entity Public Float Fair Value as of Grant Date Award Grant Date Fair Value Statement, Operating Activities Segment [Axis] Operating Activities [Axis] Schedule of Goodwill [Table] Goodwill [Table] Equity and other Event-Driven Revenue, Equity And Other [Member] Event-Driven Revenue, Equity And Other [Member] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Canton Coins Canton Coins [Member] Canton Coins Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Aggregate intrinsic value, Vested and Expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Table] Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Table] Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Table] Original Cost Intangible Asset, Finite-Lived, before Accumulated Amortization Payables and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount O 2027 A Dividends O 2027 A Dividends [Member] O 2027 A Dividends Amortization period of unrecognized compensation cost for restricted stock awards Employee Service Share Based Compensation Restricted Stock Awards Compensation Cost Not Yet Recognized Period For Recognition Employee Service Share Based Compensation Restricted Stock Awards Compensation Cost Not Yet Recognized Period For Recognition Stock options vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Goodwill [Roll Forward] Goodwill [Roll Forward] Furniture and fixtures Furniture and Fixtures [Member] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Weighted average remaining contractual life, exercisable (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term Schedule of Financial Assets and Liabilities Measured at 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] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Regulatory Recurring Fee Revenue Regulatory [Member] Recurring Fee Revenue Regulatory Total Minimum Commitment Total Minimum Commitment Total Schedule of Costs Recorded for Defined Contribution Savings Plans Defined Contribution Plan Disclosures [Table Text Block] Weighted-average expected life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Gross decreases due to lapse of the statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Treasury stock acquired (in shares) Repurchase of common stock shares (in shares) Treasury Stock, Shares, Acquired Closing stock price (in dollars per share) Share Price Geographical [Axis] Geographical [Axis] 401(k) savings plan Savings Plan 401(k) [Member] 401(k) Savings Plan [Member] Contract liabilities Contract with Customer, Liability Retirement Plan Name [Domain] Retirement Plan Name [Domain] Interest expense on borrowings Interest Expense, Debt Deductions SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Treasury stock acquired Treasury Stock, Value, Acquired, Cost Method Equity Method Investments Equity Method Investments [Policy Text Block] Cash and cash equivalents, beginning of fiscal year Cash and cash equivalents, end of fiscal year Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Treasury stock reissued Stock Issued During Period, Value, Treasury Stock Reissued Customer contracts and lists Customer contracts and lists Customer Lists [Member] Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Non-NEOs Non-NEOs [Member] Consideration transferred Payments to Acquire Businesses, Gross 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Customer [Domain] Customer [Domain] LEASES Lessee, Operating Leases [Text Block] 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Purchases of Treasury stock Payments for Repurchase of Common Stock Contract liabilities Contract with Customer, Liability, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Cash flow hedge amortization, net of taxes of $(0.3), $(0.3), and $(0.3) for the years ended June 30, 2026, 2025 and 2024, respectively Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table]     Common Stock Common Stock [Member] IBM Private Cloud Agreement IBM Private Cloud Agreement [Member] IBM Private Cloud Agreement Non-taxable and non-deductible items, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Employee Severance Employee Severance [Member] Operating lease cost Operating Lease, Cost Derivative Contract [Domain] Derivative Contract [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Increase (decrease) in Provision for income taxes from: Effective Income Tax Rate Reconciliation, Increase (Decrease) In Provision For Income Taxes [Abstract] Effective Income Tax Rate Reconciliation, Increase (Decrease) In Provision For Income Taxes [Abstract] Land and buildings Land and Building [Member] Schedule of Lease Expenses Related to Contractual Obligations Summary of Expenses Related to Contractual Obligations [Table Text Block] Summary of Expenses Related to Contractual Obligations [Table Text Block] Foreign currency translation and other Goodwill, Foreign Currency Translation, Gain (Loss) Total liabilities and stockholders’ equity Liabilities and Equity Variable lease cost Variable Lease, Cost Stock Options Share-Based Payment Arrangement, Option [Member] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Foreign net operating loss carryforwards subject to expiration Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration Supplemental Employee Retirement Plan Supplemental Employee Retirement Plan [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Net tangible liabilities assumed Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Net Tangible Assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Net Tangible Assets Wealth and investment management Recurring Fee Revenue, Wealth and Investment Management [Member] Recurring Fee Revenue, Wealth and Investment Management Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Additional paid-in capital Additional Paid in Capital Term Loans Notes Payable to Banks [Member] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Deferred Sales Commission Costs Deferred Sales Commission Costs, Policy [Policy Text Block] Deferred Sales Commission Costs, Policy Software license liabilities Accrued Software Licenses, Current Accrued Software Licenses, Current 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three 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] Aggregate intrinsic value, outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Restricted stock units expected to vest (in dollars per share) Sale of Stock, Price Per Share Schedule of Amounts Charged to Expense Schedule of Defined Benefit Plans Disclosures [Table Text Block] Crypto Asset [Axis] Crypto Asset [Axis] Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock: Authorized, 25.0 shares; issued and outstanding, none Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Distribution Cost of Revenues Cost of Goods and Service [Policy Text Block] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash payments made for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Hedging Designation [Axis] Hedging Designation [Axis] Total assets Assets, Fair Value Disclosure Schedule II-Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Cash flow hedge amortization, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent Name Measure Name Crypto asset, realized gain, nonoperating Crypto Asset, Realized Gain, Nonoperating Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Senior Notes, Excluding Current Maturities Senior Notes, Excluding Current Maturities [Member] Senior Notes, Excluding Current Maturities Other current assets Increase (Decrease) in Other Current Assets U.S. Income (Loss) from Continuing Operations before Income Taxes, Domestic Additional Paid-In Capital Additional Paid-in Capital [Member] Equipment Equipment Equipment [Member] Goodwill impairment Goodwill, Impairment Loss Name Trading Arrangement, Individual Name Unrecognized compensation cost of restricted stock awards Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents Cash and Cash Equivalent Percentage of warrants currently exercisable Digital Asset, Percentage Of Warrants Currently Exercisable Digital Asset, Percentage Of Warrants Currently Exercisable Largest Customer Largest Customer [Member] Largest Customer [Member] Software purchases and capitalized internal use software Payments for Software Company Selected Measure Amount Company Selected Measure Amount Two Thousand Eighteen Equity Incentive Plan Two Thousand Eighteen Equity Incentive Plan [Member] Two Thousand Eighteen Equity Incentive Plan Weighted average remaining contractual life, Vested and Expected to vest (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Retirement Plan Name [Axis] Retirement Plan Name [Axis] 2031 Long-Term Debt, Maturity, Year Five Benefit obligation Other Postemployment Plan, Benefit Obligation Other Postemployment Plan, Benefit Obligation Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Total Reportable Segments Reportable Segments [Member] Reportable Segments Customer Concentration Risk Customer Concentration Risk [Member] Cost of revenues Cost of Product and Service Sold SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Award Timing Method Award Timing Method [Text Block] Net change in Cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance Total deferred tax assets Deferred Tax Assets, Gross Fiscal 2026 Term Loan Fiscal 2026 Term Loan [Member] Fiscal 2026 Term Loan Cliff Vesting - Year One Share-Based Payment Arrangement, Tranche Three [Member] Net earnings Net earnings Net Income (Loss) Attributable to Parent Increase in quarterly cash dividend (in dollars per share) Common Stock, Dividends, Per Share, Declared, Increase Common Stock, Dividends, Per Share, Declared, Increase Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Other Other Data Center Agreements [Member] Other Data Center Agreements Operating lease liabilities - Non- current, extensible list Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Business process outsourcing administration fees Business Process Outsourcing Administration Fee Business Process Outsourcing Administration Fee Schedule of Assumptions Used to Determine Fair Values of Stock Option Grants Share Based Compensation Arrangement Awards Options Grants In Period Weighted Average Grant Date Fair Value Assumptions [Table Text Block] Tabular disclosure of assumptions related to the weighted-average grant-date fair value of equity options or other equity instruments granted during the year. Mutual funds Event-Driven Revenue, Mutual Funds [Member] Event-Driven Revenue, Mutual Funds [Member] Pre-tax net unrealized gains and (losses) Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Restricted stock units expected to vest (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Intrinsic Value Weighted-average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Schedule of Other Non-Current Assets Schedule of Other Assets, Noncurrent [Table Text Block] 2027 Minimum Commitment Year One Minimum Commitment Year One Pre-funded common stock purchase warrants (in shares) Subscription Agreement, Pre-Funded Common Stock Warrants Subscription Agreement, Pre-Funded Common Stock Warrants Statistical Measurement [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Customer [Axis] Customer [Axis] Customer communications Recurring Fee Revenue Customer Communications [Member] Recurring Fee Revenue Customer Communications Common stock, $0.01 par value: Authorized, 650.0 shares; issued, 154.5 and 154.5 shares, respectively; outstanding, 114.0 and 117.1 shares, respectively Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Depreciation and amortization Depreciation and amortization Depreciation, Amortization and Accretion, Net Schedule of Outstanding Borrowings Schedule of Long-Term Debt Instruments [Table Text Block] Gross decreases related to settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Classification: Deferred Tax Assets And Liabilities, Net, Classification [Abstract] Deferred Tax Assets And Liabilities, Net, Classification [Abstract] Other Other Assets, Miscellaneous, Noncurrent Stock option term Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Restatement Determination Date Restatement Determination Date Tax Jurisdiction of Domicile [Extensible Enumeration] Tax Jurisdiction of Domicile [Extensible Enumeration] Valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Cliff Vesting - Year Three Share-Based Compensation Award, Tranche Five [Member] Share-Based Compensation Award, Tranche Five [Member] Assets: Operating Lease, Lessee, Assets [Abstract] Operating Lease, Lessee, Assets Vested and Expected to vest (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Deferred sales commissions costs Contract With Customer, Asset, Net, Noncurrent, Sales Commission Costs Contract With Customer, Asset, Net, Noncurrent, Sales Commission Costs Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Schedule of Crypto Asset Activity Crypto Asset, Activity [Table Text Block] Current liabilities: Liabilities, Current [Abstract] Total realized and unrealized gains included in other income (loss), net Crypto Asset, Realized and Unrealized Gain (Loss), Nonoperating 2031 Minimum Commitment Year Five Minimum Commitment Year Five Goodwill Goodwill and Intangible Assets, Policy [Policy Text Block] Senior Notes, Current Maturities Senior Notes, Current Maturities [Member] Senior Notes, Current Maturities Loss Contingencies [Table] Loss Contingencies [Table] Other Others [Member] Others [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province 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 Assets: Assets, Fair Value Disclosure [Abstract] Gross increases related to prior period tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Share Repurchase Program [Domain] Share Repurchase Program [Domain] Derivative notional amount Derivative, Notional Amount Basic (in shares) Weighted Average Number of Shares Outstanding, Basic SOFR, Step Down Secured Overnight Financing Raye (SOFR) Overnight Index Swap Rate, Step Downs [Member] Secured Overnight Financing Raye (SOFR) Overnight Index Swap Rate, Step Downs Accumulated impairment losses Goodwill, Impaired, Accumulated Impairment Loss SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Amortization of acquired intangibles and purchased intellectual property Amortization of acquired intangibles Amortization of Acquired Intangible Assets and Intellectual Property Amortization of Acquired Intangible Assets and Intellectual Property 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Schedule of Income Taxes Paid, Net of Refunds Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Schedule of Supplemental Cash Flow Information Operating Lease, Lessee, Supplemental Cash Flow Information [Table Text Block] Operating Lease, Lessee, Supplemental Cash Flow Information Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Capitalized costs incurred Capitalized Contract Cost, Costs Incurred Capitalized Contract Cost, Costs Incurred Subscription agreement, consideration, digital assets, amount Subscription Agreement, Consideration, Digital Assets, Amount Subscription Agreement, Consideration, Digital Assets, Amount Consolidation and Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Weighted-average shares outstanding: Weighted Average Shares Outstanding [Abstract] Weighted Average Shares Outstanding [Abstract] 2025 Immaterial Acquisition 2025 Immaterial Acquisition [Member] 2025 Immaterial Acquisition Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Research and development expenses Deferred Tax Asset, In-Process Research and Development Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Current portion of long-term debt Long-Term Debt, Current Maturities Data-driven fund solutions Recurring Fee Revenue Data Driven Fund Solutions [Member] Recurring Fee Revenue Data Driven Fund Solutions New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Accrual of unpaid property, plant, equipment and software Capital Expenditures Incurred but Not yet Paid Issuer Recurring Fee Revenue Issuer [Member] Recurring Fee Revenue Issuer Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Total long-term debt Long-Term Debt PROPERTY, PLANT AND EQUIPMENT, NET Property, Plant, and Equipment [Text Block] Changes in operating assets and liabilities, net of assets and liabilities acquired: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Expired/forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Net cash flows from 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] Beginning balance Ending balance Unrecognized Tax Benefits Depreciation expense for Property, plant and equipment Depreciation And Amortization Of Property Depreciation And Amortization Of Property Long Term Debt, Excluding Current Maturities Long Term Debt, Excluding Current Maturities [Member] Long Term Debt, Excluding Current Maturities Operating expenses: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Other Accrued Expenses And Current Liabilities Other Accrued expenses and current liabilities, other. Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Stock conversion ratio Share-Based Compensation Arrangement By Share-Based Payment Award, Conversion Ratio Share-Based Compensation Arrangement By Share-Based Payment Award, Conversion Ratio Total liabilities Liabilities, Fair Value Disclosure Software licenses Software License [Member] Software License Cash and cash equivalents: Cash and Cash Equivalent [Abstract] Segments Segment Reporting, Policy [Policy Text Block] Schedule of Property, Plant and Equipment at Cost and Accumulated Depreciation and Depreciation Expense Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] U.S. State Deferred State and Local Income Tax Expense (Benefit) Annual facility fee, step up (as basis points) Line Of Credit Facility Commitment Fee Percentage Step Up Line Of Credit Facility Commitment Fee Percentage Step Up Schedule of Denominators of Basic and Diluted EPS Computations Schedule of Weighted Average Number of Shares [Table Text Block] Digital assets change in fair market value Asset at Fair Value, Changes in Fair Value Resulting from Changes in Assumptions Geographical [Domain] Geographical [Domain] Schedule of Components of Interest Expense, Net Interest Income and Interest Expense Disclosure [Table Text Block] Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table] Change in Unrecognized Tax Benefit, Reasonably Possible [Table] 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] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Amounts reclassified from accumulated other comprehensive income/(loss) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Deferred revenue Deferred Tax Assets, Deferred Revenue Deferred Tax Assets, Deferred Revenue Distribution revenues Distribution Revenue [Member] Distribution Revenue [Member] Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Canton Digital Asset Treasury transaction Crypto Asset, Sale Pension and Post- Retirement Liabilities Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Deferred payments Business Combination, Consideration Transferred, Tangible and Intangible Assets, Excluding Cash Other Other Sundry Liabilities, Noncurrent Interest income Investment Income, Interest and Dividend Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Deferred expenses Deferred Tax Liabilities, Deferred Expense Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items] Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] Contractual Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] Derivative Instruments Derivatives, Policy [Policy Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent DERIVATIVE INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] Goodwill and identifiable intangibles Deferred Tax Liabilities, Goodwill and Intangible Assets Less: Discount Amount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Units restricted Crypto Asset, Number of Units, Restricted Prepaid expense Prepaid Expense Unconsolidated investment Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Liability Derivative Liability, Subject to Master Netting Arrangement, before Offset Other non-current assets Increase (Decrease) in Other Noncurrent Assets Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] U.S. Federal Deferred Federal Income Tax Expense (Benefit) Treasury Stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Total lease payments Lessee, Operating Lease, Liability, to be Paid Benefit obligation Other Postretirement Plan, Benefit Obligation Other Postretirement Plan, Benefit Obligation Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Total accumulated amortization Capitalized Contract Cost, Accumulated Amortization Dividend yield Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Maximum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Maximum Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Other comprehensive income (loss), net: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List Not Disclosed Flag Data center expenses Information Technology and Data Processing Treasury stock reissued (in shares) Stock Issued During Period, Shares, Treasury Stock Reissued Crypto Asset [Roll Forward] Crypto Asset [Roll Forward] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Cost Basis Crypto Asset, Cost FINANCIAL DATA BY SEGMENT Segment Reporting [Text Block] Opportunistic Buy-Backs Opportunistic Buy-Backs [Member] Opportunistic Buy-Backs [Member] Minimum Minimum [Member] Auditor Name Auditor Name Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Schedule of Finite-lived Intangible Assets Amortization Expense Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block] Effect of exchange rate changes on Cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Acolin Group Holdco Limited Acolin Group Holdco Limited [Member] Acolin Group Holdco Limited Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Weighted average remaining contractual life, outstanding (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term 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] Other liabilities Other Liabilities Beginning-of-period Level 3 transfer-out value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Beginning Of Period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Beginning Of Period Deferred payments Business Combination, Consideration Transferred, Liabilities Incurred Business Combination [Line Items] Business Combination [Line Items] Common stock dividends Dividends, Common Stock Benefit expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Common stock, shares authorized (in shares) Common Stock, Shares Authorized Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Schedule of Incentive Equity Awards Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Exercise Price Award Exercise Price Schedule of Restructuring and Related Costs [Table] Restructuring Cost [Table] Segment Reporting [Line Items] Segment Reporting [Line Items] Vesting Type [Axis] Vesting Type [Axis] Vesting Type [Axis] Other receivables SEC Schedule, 12-09, Valuation Allowance, Other Receivables [Member] SEC Schedule, 12-09, Valuation Allowance, Other Receivables 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] EMPLOYEE BENEFIT PLANS Compensation and Employee Benefit Plans [Text Block] Accounts receivable, net of allowance for doubtful accounts of $13.2 and $12.5, respectively Accounts Receivable, after Allowance for Credit Loss Thereafter Minimum Commitment After Fifth Year Minimum Commitment After Fifth Year Debt repayments Repayments of Long-Term Debt Segment, Operating Activities [Domain] Operating Activities [Domain] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Restructuring reserve Restructuring Reserve Equity Component [Domain] Equity Component [Domain] Financial Instruments Financial Instruments Policy [Policy Text Block] Financial Instruments Policy [Policy Text Block]" Adoption Date Trading Arrangement Adoption Date Counterparty Name [Domain] Counterparty Name [Domain] INTEREST EXPENSE, NET Interest Income and Interest Expense Disclosure [Text Block] Restructuring Type [Axis] Restructuring Type [Axis] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other Liabilities Disclosure [Abstract] Other Liabilities Disclosure [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Total Operating lease liabilities Present value of operating lease liabilities Operating Lease, Liability Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Other financing activities Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Global Technology and Operations Global Technology And Operations [Member] Global Technology And Operations [Member] Selling, general and administrative expenses Selling, General and Administrative Expense Repayment of debt Repayments of Debt Recurring revenues Recurring Fee Revenue [Member] Recurring Fee Revenue [Member] Type of Restructuring [Domain] Type of Restructuring [Domain] Business Combination [Domain] Business Combination [Domain] Expired/forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price CONTRACTUAL COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ARRANGEMENTS Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Data Center Agreements Data Center Agreements [Member] Data Center Agreements Crypto asset, fair value Beginning balance Ending balance Crypto Asset, Fair Value All Adjustments to Compensation All Adjustments to Compensation [Member] Segment Reporting, Reconciling Item, Corporate Nonsegment Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Business Combination [Axis] Business Combination [Axis] Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount Income Taxes Income Tax, Policy [Policy Text Block] Net cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Stockholders’ equity: Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Depreciation Deferred Tax Liabilities, Depreciation Deferred Tax Liabilities, Depreciation Deferred tax assets: Deferred Tax Assets, Net [Abstract] Realized gains Crypto Asset, Realized Gain (Loss), Nonoperating Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Reduction of interest expense, net associated with the fair value hedge Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Earnings before income taxes: Income (Loss) Attributable to Parent, before Tax [Abstract] Schedule of Intangible Assets at Cost and Accumulated Amortization Intangible Asset, Finite-Lived [Table Text Block] Fiscal 2016 Senior Notes Fiscal 2016 Senior Notes [Member] Fiscal 2016 Senior Notes [Member] Intangible Asset, Finite-Lived, Acquired [Table] Intangible Asset, Finite-Lived, Acquired [Table] Other Commitments [Domain] Other Commitments [Domain] City Area Code City Area Code SUBSEQUENT EVENTS Subsequent Events [Text Block] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] 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] Schedule of Benefit Obligation under Plan Schedule of Accumulated and Projected Benefit Obligations [Table Text Block] Less: Accumulated depreciation Accumulated Depreciation Accumulated Depreciation SOFR Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Deferred data center costs Contract With Customer, Net, Noncurrent, Data Center Costs Contract With Customer, Net, Noncurrent, Data Center Costs Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Pension and post-retirement liability adjustment, net of tax benefit (provision) of $0.4, $(0.4) and $0.4 for the years ended June 30, 2026, 2025 and 2024, respectively Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Percentage of warrants subject to lock up Digital Asset, Percentage Of Warrants Subject To Lock Up Digital Asset, Percentage Of Warrants Subject To Lock Up Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-Term Purchase Commitment, Category of Item Purchased [Domain] Tharimmune, Inc Tharimmune, Inc [Member] Tharimmune, Inc Net deferred tax liabilities Deferred Tax Liabilities, Net Benefit obligation Defined Benefit Plan, Benefit Obligation Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Fiscal 2025 Revolving Credit Facility U.S. Dollar Tranche Fiscal 2025 Revolving Credit Facility U.S. Dollar Tranche [Member] Fiscal 2025 Revolving Credit Facility U.S. Dollar Tranche Event-driven revenues Event-Driven Revenue [Member] Event-Driven Revenue [Member] Stock-based compensation expense Share-Based Payment Arrangement, Expense Acolin, iJoin And Signal Acolin, iJoin And Signal [Member] Acolin, iJoin And Signal Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Additions Goodwill, Acquired During Period Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Amount of revenue recognized Contract with Customer, Liability, Revenue Recognized Subsequent Event Type [Domain] Subsequent Event Type [Domain] Payables and Accruals [Abstract] Expired/forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Charged to costs and expenses SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Award vesting period of cost recognition Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Of Cost Recognition Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Of Cost Recognition Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Liabilities: Liabilities, Fair Value Disclosure [Abstract] Cash Flow Hedging Cash Flow Hedging [Member] Adjustments to reconcile Net earnings to net cash flows from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2029 Long-Term Debt, Maturity, Year Three Cash Flows From Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property, plant and equipment, net Property, plant and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Opening Retained Earnings Adjustment Crypto Asset, Opening Adjustment Crypto Asset, Opening Adjustment U.S. State and Local Income Tax Paid, State and Local, after Refund Received SIS Services Agreement SIS Services Agreement [Member] SIS Services Agreement Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Investment securities maturity period for consideration as cash equivalents, in days Cash And Cash Equivalent Maturity Period Cash And Cash Equivalent Maturity Period GOODWILL AND INTANGIBLE ASSETS, NET Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Schedule of Earnings from Continuing Operations before Income Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Other investing activities Payment for (Proceeds from) Other Investing Activity Cliff Vesting - Year Two Share-Based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Segment Reporting [Table] Segment Reporting [Table] Share-based compensation arrangement by share-based payment award, number of shares available for grant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Schedule of Components of Lease Cost Lease, Cost [Table Text Block] Other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Furniture, leaseholds and other Furniture And Leasehold Improvements [Member] Furniture And Leasehold Improvements [Member] Current Fiscal Year End Date Current Fiscal Year End Date Foreign net operating loss carryforwards not subject to expiration Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] 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] Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Thereafter Intangible Asset, Finite-Lived, Estimated Amortization Expense, after Year Five Deferred Client Conversion and Start-Up Costs Deferred Client Conversion Costs And Start Up Costs Policy [Policy Text Block] Deferred Client Conversion Costs And Start Up Costs Policy [Policy Text Block] Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Allowance for doubtful accounts SEC Schedule, 12-09, Allowance, Credit Loss [Member] Aggregate intrinsic value of RSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Additions - Revenue Crypto Asset, Addition Treasury stock, shares (in shares) Treasury Stock, Common, Shares Equity Components [Axis] Equity Components [Axis] Net Deferred Costs Capitalized Contract Cost, Net Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cash payments made for income taxes, net of refunds Total income taxes paid, net of refunds Income Tax Paid, after Refund Received Deferred tax asset valuation allowances Less: Valuation allowances Deferred Tax Assets, Valuation Allowance Schedule of Minimum Commitments Related to Technology Service Agreement Schedule Of Minimum Commitments Related To Technology Service Agreement [Table Text Block] Schedule Of Minimum Commitments Related To Technology Service Agreement [Table Text Block] Fiscal 2024 Amended Term Loans Fiscal 2024 Amended Term Loans [Member] Fiscal 2024 Amended Term Loans Entity Interactive Data Current Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Payables and accrued expenses Total Accounts Payable and Accrued Liabilities, Current Schedule of Estimated Useful Lives of Assets Property Plant And Equipment Estimated Useful Life [Table Text Block] Property Plant And Equipment Estimated Useful Life [Table Text Block] Entity Small Business Entity Small Business Comprehensive income Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Weighted average useful life Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Payments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Net tangible liabilities assumed Net tangible liabilities assumed Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Net Tangible Liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Net Tangible Liabilities MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] 2030 Minimum Commitment Year Four Minimum Commitment Year Four Reserve for unrecognized tad positions Liability for Uncertainty in Income Taxes, Noncurrent Non-taxable and non-deductible items, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Other non-current assets Total Other Assets, Noncurrent Document Type Document Type Acquisitions, net of cash acquired Acquisitions, net of cash acquired Cash payments Payments to Acquire Businesses, Net of Cash Acquired 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] Gross decreases related to prior period tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Aggregate intrinsic value, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Long Term Debt, Current Portion Long Term Debt, Current Portion [Member] Long Term Debt, Current Portion Capitalized costs, beginning balance Total capitalized costs, ending balance Capitalized Contract Cost, Gross Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Debt proceeds Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Contract liabilities Contract with Customer, Liability, Noncurrent Canada CANADA Deferred tax liabilities Deferred Tax Liabilities, Gross Deferred client conversion and start-up cost amortization Amortization of Other Deferred Charges Accrued broker fees Commission Payable to Broker-Dealer and Clearing Organization Net Investment Hedge Net Investment Hedging [Member] Gross increases related to current period tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Commitments and contingencies Commitments and Contingencies Schedule of Other Non-current Liabilities Other Noncurrent Liabilities [Table Text Block] Summary of Purchase Price Schedule of Noncash or Part Noncash Acquisitions [Table Text Block] Property, plant and equipment, gross Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Stock-based compensation - excess tax benefits (“ETB”) Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Executive Category: Executive Category [Axis] Acquisition Business Combination [Policy Text Block] Counterparty Name [Axis] Counterparty Name [Axis] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Liabilities: Operating Lease, Lessee, Liabilities [Abstract] Operating Lease, Lessee, Liabilities Inventory Inventory, Net Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Software license agreements Software License Expense Software License Expense PEO Name PEO Name Cash Flow Hedge Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Other segment items Segment Reporting, Other Segment Item, Amount Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Related tax benefits Share-Based Payment Arrangement, Expense, Tax Benefit Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Revenue Recognition Revenue [Policy Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Graded Vesting Graded Vesting [Member] Graded Vesting [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Additional contingent consideration incurred Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 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] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Tax credits Deferred Tax Assets, Tax Credit Carryforwards Vesting of RSUs (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested Schedule of Designated Derivatives Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic earnings per share (in dollars per share) Earnings Per Share, Basic Acquired intellectual property Intellectual Property [Member] Total current assets Assets, Current Annual facility fee, step down (as basis points) Line Of Credit Facility Commitment Fee Percentage Step Down Line Of Credit Facility Commitment Fee Percentage Step Down Fiscal 2021 Term Loans Fiscal 2021 Term Loans [Member] Fiscal 2021 Term Loans Insider Trading Arrangements [Line Items] Long-term debt Long-Term Debt, Excluding Current Maturities Valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Document Annual Report Document Annual Report 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] Other non-current assets: Other Non Current Assets [Abstract] Other Non Current Assets [Abstract] Weighted-average volatility factor Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Contingent consideration obligations Business Combination, Contingent Consideration, Liability Benefit expense Other Postretirement Benefits Cost (Reversal of Cost) Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Europe UNITED KINGDOM Software/hardware maintenance agreements Software and Hardware Maintenance Expense Software and Hardware Maintenance Expense Percentage of consolidated revenues Concentration Risk, Percentage Stock option exercises APIC, Share-Based Payment Arrangement, Recognition and Exercise Equity Awards Adjustments Equity Awards Adjustments [Member] Total ICS Recurring revenues Recurring Fee Revenue, Investor Communication Solutions [Member] Recurring Fee Revenue, Investor Communication Solutions [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Derivative liability Derivative Liability, Noncurrent Time-based Restricted Stock Units Time Based Restricted Stock [Member] Time based restricted stock [member] Total expenses Communications, Information Technology and Occupancy Plan Name [Axis] Plan Name [Axis] Income Tax Authority [Domain] Income Tax Jurisdiction [Domain] Other non-current liabilities Increase (Decrease) in Other Noncurrent Liabilities Other non-operating income (expenses), net Other Nonoperating Income (Expense) 2031 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Five Schedule of Components of Payables and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Expired/forfeited RSUs (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Other non-operating income Proceeds from Disposal, Crypto Asset Future commitment to fund Equity Method Investment, Future Capital Commitment Equity Method Investment, Future Capital Commitment Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Contract liabilities Increase (Decrease) in Contract With Customer, Liability, Current Increase (Decrease) in Contract With Customer, Liability, Current Share Repurchase Program [Axis] Share Repurchase Program [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Cumulative effect of changes in accounting principle Equity, Attributable to Parent, Including Tax Equity, Attributable to Parent, Including Tax Warrant assets Warrant Assets Warrant Assets Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Securities Investment, Policy [Policy Text Block] Income Tax Authority [Axis] Income Tax Jurisdiction [Axis] Vested and Expected to vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Software license liabilities Software License Liabilities, Noncurrent Software License Liabilities, Noncurrent Dispositions Crypto Asset, Disposition INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Other Other Noncash Income (Expense) 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Aggregate purchase price Business Combination, Consideration Transferred Retirement Plan Type [Domain] Retirement Plan Type [Domain] Entity Filer Category Entity Filer Category Acquisition date fair value of contingent consideration liability Business Combination, Contingency Recognized at Acquisition Date, Liability Assumed, Fair Value Dividends [Axis] Dividends [Axis] Currency Swap Currency Swap [Member] Weighted-average interest rate Debt Instrument, Interest Rate During Period SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Operating lease liabilities - current, extensible list Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Beginning balance of RSUs (in shares) Ending balance of RSUs (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number Fiscal 2021 Term Loans Tranche 2 Fiscal 2021 Term Loans Tranche 2 [Member] Fiscal 2021 Term Loans Tranche 2 Current assets: Assets, Current [Abstract] Senior Notes Senior Notes [Member] Foreign Currency Translation and Transactions Foreign Currency Transactions and Translations Policy [Policy Text Block] Entity Address, Address Line One Entity Address, Address Line One ROU assets obtained in exchange for operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vesting of RSUs (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Opening Retained Earnings Adjustment Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Adjustments Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Adjustments Provision for income taxes Total Provision for income taxes Income Tax Expense (Benefit) Fair Value Hedge Fair Value Hedging [Member] Contingent consideration maximum potential pay out Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount Long-term deferred tax assets (included in Other non-current assets) Deferred Tax Assets Long Term Contracts Deferred Tax Assets Long Term Contracts Total GTO Recurring revenues Recurring Fee Revenue, Global Technology And Operations [Member] Recurring Fee Revenue, Global Technology And Operations [Member] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Fiscal 2021 Senior Notes Fiscal 2021 Senior Notes [Member] Fiscal 2021 Senior Notes Statement [Table] Statement [Table] Cliff Vesting Share-Based Payment Arrangement, Tranche Two [Member] Treasury Lock Treasury Lock [Member] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Schedule of Contract Assets and Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Asset Derivative Asset, Subject to Master Netting Arrangement, before Offset Digital assets Fair Value Crypto Asset, Fair Value, Noncurrent SIS SIS [Member] SIS U.S. Federal Current Federal Tax Expense (Benefit) Category of Item Purchased [Axis] Category of Item Purchased [Axis] Post-employment retirement obligations Liability, Other Postretirement Defined Benefit Plan, Noncurrent Derivative Instruments and Hedging Activities Disclosure [Abstract]