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Disclosure [Abstract] Income Tax Disclosure [Abstract] Document Transition Report Document Transition Report Underlying Securities Award Underlying Securities Amount Concentration Risk [Line Items] Concentration Risk [Line Items] Billable expenses Billable Expenses Billable expenses include direct subcontractor expenses, travel expenses, and other expenses incurred to perform on contracts. 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Defense Customers Defense Clients [Member] Defense Clients [Member] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Current-period OCI, net of income taxes Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Current liabilities: Liabilities, Current [Abstract] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] Revolving credit facility, amount outstanding Long-Term Line of Credit Net gains on investments, dispositions, and other Gain (Loss) on Disposition of Assets Diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable, net Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Concentration Risk Benchmark [Domain] Concentration Risk 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[Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] 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] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Statement [Table] Statement [Table] Other (expense) income Other Nonoperating Income (Expense) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Advance payments, billings in excess of costs incurred and deferred revenue (contract liabilities) Contract with Customer, Liability Increase To Revenue To Reflect Best Estimate Of Final Cost Rates Increase To Revenue To Reflect Best Estimate Of Final Cost Rates [Member] Increase To Revenue To Reflect Best Estimate Of Final Cost Rates Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Accounts payable and other accrued expenses Total accounts payable and other accrued expenses Accounts Payable and Accrued Liabilities, Current Amendment Flag Amendment Flag Treasury stock, at cost - 47,085,814 and 43,643,540 shares at September 30, 2025 and March 31, 2025 Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Income tax reserves Liability for Uncertainty in Income Taxes, Noncurrent Weighted-average common stock shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] Cost of revenue Cost of Product and Service Sold Schedule of Reconciliation of the Income Used to Compute Basic and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Operating costs and expenses: Costs and Expenses [Abstract] Income taxes Reclassification from AOCI, Current Period, Tax Amounts reclassified from AOCI to earnings, before income taxes Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Vendor payables Accounts Payable, Trade, Current Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, issued (in shares) Common Stock, Shares, Issued Accounting Estimates Use of Estimates, Policy [Policy Text Block] Cash dividends paid Payments of Dividends Trading Arrangement: Trading Arrangement [Axis] Current derivative instruments Derivative Asset, Current Total Shareholder Return Amount Total Shareholder Return Amount Schedule of Recurring Fair Value Measurements Fair Value Measurements, Recurring and Nonrecurring [Table 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Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents, at fair value Cash and Cash Equivalent Common Stock Common Stock [Member] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Dilutive stock options and restricted stock (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment