Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Common share information: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Maximum [Member] Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Title of 12(b) Security Title of 12(b) Security Document Fiscal Year Focus Document Fiscal Year Focus Business Combination, Acquisition-Related Cost, Expense Business Combination, Acquisition-Related Cost, Expense Future revenue related to unsatisfied performance obligations, expected timing Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Adjustment to Compensation, Amount Adjustment to Compensation Amount Credit facilities Lines of Credit, Fair Value Disclosure Financial Instrument [Axis] Financial Instrument [Axis] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Certificates of Deposit Other Assets, Fair Value Disclosure Processing [Member] Processing [Member] Processing [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Recurring Fair Value Measurements[Table Text Block] Fair Value, Assets Measured on Recurring Basis [Table Text Block] Common stock - $0.01 par value; 250,000,000 shares authorized; 104,707,947 shares issued at September 30, 2026; 104,597,621 shares issued at June 30, 2026 Common Stock, Value, Issued 2027 (remaining period) Lessee, Operating Lease, Liability, to be Paid, Year One Tax withholding payments related to share-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, 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Shareholder Return Amount Peer Group Total Shareholder Return Amount Other Investments [Abstract] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Compensation Peer Group [Member] Compensation Peer Group [Member] Compensation Peer Group [Member] Capitalized Contract Cost [Domain] Capitalized Contract Cost [Domain] Less treasury stock at cost; 34,988,861 shares at September 30, 2026; 34,526,862 shares at June 30, 2026 Treasury Stock, Value Treasury Stock, Value Unsecured Debt [Member] Unsecured Debt [Member] Identifiable intangible assets Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Long-term Debt Long-Term Debt Maturity of Lease Liabilities Under ASC 842 [Table Text Block] Lessee, Operating Lease, Liability, to be Paid, Maturity [Table 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Retained Earnings [Member] Retained Earnings [Member] Revolving credit facility [Member] Revolving Credit Facility [Member] Forfeited, weighted average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Common Stock Stockholders' Equity, Policy [Policy Text Block] Services and Support [Member] License and Service [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Shares, beginning of period Shares, end of period Common Stock, Shares, Outstanding Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Diluted earnings per share Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash from financing activities Cash Provided by (Used in) Financing Activity, Including 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Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Shares issued for equity-based payment arrangements (value) Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Deferred costs Deferred Costs, Current Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Common stock, issued shares Common Stock, Shares, Issued Measure: Measure [Axis] Treasury Stock, Common, Shares Treasury Stock, Common, Shares Current assets Business Combination, Recognized Asset Acquired, Asset, Current Victor Victor [Member] Victor Long-Lived Asset, Held-for-Sale, Type [Axis] Long-Lived Asset, Held-for-Sale, Type [Axis] Equity Components [Axis] Equity Components [Axis] Non-current deferred costs Deferred Costs, Noncurrent 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Tax Identification Number Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Purchase of treasury shares Treasury Stock, Value, Acquired, Cost Method CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD CASH AND CASH EQUIVALENTS, END OF PERIOD Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Change in accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accumulated Amortization Operating Lease Right-of-use asset Accumulated Amortization Operating Lease Right-of-use asset Accumulated Amortization Operating Lease Right-of-use asset Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Complementary [Member] Complementary [Member] Complementary Segment [Member] Debt Instrument [Axis] Debt Instrument [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Payments to Acquire Businesses, Gross Payments to Acquire Businesses, Gross Expense for stock-based compensation Share-Based Payment Arrangement, Noncash Expense Schedule Of Share Based Payment Award PSU Valuation Assumptions [Table Text Block] ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlock [Table Text Block] us-gaap_ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlock [Table Text Block] Lessee, lease not yet commenced, future minimum payments due Lessee, lease not yet commenced, future minimum payments due Lessee, lease not yet commenced, future minimum payments due Allowance for Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Investment, Name [Domain] Investment, Name [Domain] Lessee, Operating Leases [Text Block] Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic earnings per share Earnings Per Share, Basic Purchase of treasury stock Payments for Repurchase of Common Stock Deferred revenues Contract Liabilities (Deferred Revenue) - Current Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Repayments on credit facilities Repayment of Long-Term Debt, Long-Term Lease Obligation, and Capital Security Debt Long-Term Debt, Excluding Current Maturities Cost of Revenue Cost of Revenue Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Receivables, net Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Capitalized costs to obtain contracts with clients - non-current Capitalized costs to obtain contracts with clients - non-current [Member] Capitalized costs to obtain contracts with clients - non-current Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Unsecured Loan, Unused Borrowing Capacity Debt Instrument, Unused Borrowing Capacity, Amount Common Stock [Member] Common Stock [Member] Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Operating Lease, Cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Long-Lived Assets Held-for-Sale, Name [Domain] Long-Lived Assets Held-for-Sale, Name [Domain] Nature of Operations and Summary of Significant Accounting Policies [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover page. Cover [Abstract] Dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Capitalized costs to obtain contracts with clients - current Capitalized costs to obtain contracts with clients - current [Member] Capitalized costs to obtain contracts with clients - current Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and equity Liabilities and Equity Variable Lease, Cost Variable Lease, Cost Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Income tax receivable Income Taxes Receivable, Current Name Awards Close in Time to MNPI Disclosures, Individual Name Purchase of investments Payments to Acquire Investments 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] Forfeited, number of shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Preferred stock, shares authorized Preferred Stock, Shares Authorized Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock - $1 par value; 500,000 shares authorized, none issued Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Abstract] Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Computer software developed Payments to Develop Software Capitalized costs to fulfill contracts with clients Capitalized costs to fulfill contracts with clients [Member] Capitalized costs to fulfill contracts with clients Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Company Selected Measure Amount Company Selected Measure Amount Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Shares issued for equity-based payment arrangements (shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Net Income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Unrecognized Tax Benefits that Would Impact Effective Tax Rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate CURRENT ASSETS: Assets, Current [Abstract] Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Prime Rate [Member] Prime Rate [Member] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vested, weighted average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value PROVISION FOR INCOME TAXES Income Tax Expense (Benefit) Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Other intangible assets, net of amortization Other Intangible Assets, Net Recent Accounting Guidance [Text Block] Accounting Standards Update and Change in Accounting Principle [Text Block] NET INCOME Net Income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Computer software, net of amortization Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, after Accumulated Amortization Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from sale of assets Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Restatement Determination Date: Restatement Determination Date [Axis] Certificates of Deposit Certificates of Deposit [Member] Capitalized Contract Cost, Impairment Loss Capitalized Contract Cost, Impairment Loss Lessee, Leases [Policy Text Block] Lessee, Leases [Policy Text Block] Contract Balances [Table Text Block] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Fed Funds Effective Rate Overnight Index Swap Rate [Member] Fed Funds Effective Rate Overnight Index Swap Rate [Member] Change in receivables Increase (Decrease) in Receivables Class of Stock Disclosures [Abstract] Class of Stock Disclosures [Abstract] Business Combination, Effective Date of Acquisition Business Combination, Effective Date of Acquisition Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]