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[Abstract] Lease liabilities arising from obtaining ROU assets [Abstract] Assets divested Disposal Group, Including Discontinued Operation, Assets Divested Disposal Group, Including Discontinued Operation, Assets Divested Total undiscounted cash flows Lessor, Operating Lease, Payment to be Received Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Other long-term liabilities Other Liabilities, Noncurrent Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Accrued bonuses Accrued Bonuses, Current Comprehensive income attributable to Leidos common stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Schedule of Income Tax Payments, Net of Refunds by Jurisdiction Schedule of Income before Income Tax, Domestic and Foreign 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