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Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fixed-price [Member] Fixed-Price Contract [Member] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Advance payments and billings in excess of costs incurred Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets International(2) International Customer [Member] International Customer Inventory, Work in Process, Net of Reserves Inventory, Work in Process, Net of Reserves Exercise Price Award Exercise Price HALO Program HALO Program [Member] HALO Program Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] 2023 Repurchase Program - Completion Date 2023 Repurchase Program - Completion Date 2023 Repurchase Program - Completion Date Europe Europe [Member] Inventory, Current [Table] Inventory, Current [Table] Other investing activities, net Payment for (Proceeds from) Other Investing Activity STOCK COMPENSATION PLANS AND OTHER COMPENSATION ARRANGEMENTS Share-Based Payment Arrangement [Text Block] Shares Repurchased Stock Repurchased and Retired During Period, Shares Assets Assets [Abstract] Long-term debt, net of current portion of $533 for 2025 and $1,582 for 2024 Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Components of Net Periodic Benefit Cost Defined 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Warden [Member] Kathy J. 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Debt Expense Other Noncurrent Liabilities [Member] Other Noncurrent Liabilities [Member] Restatement Determination Date: Restatement Determination Date [Axis] Disclosure Text Block Supplement [Abstract] Disclosure Text Block Supplement [Abstract] Stock compensation Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Accelerated Share Repurchase Final Receipt Accelerated Share Repurchase Final Receipt (Shares) Accelerated Share Repurchase Final Receipt (Shares) Other financing activities, net Proceeds from (Payment for) Other Financing Activity Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Revenue, Contract Type [Line Items] Segment Reporting, Revenue Reconciling Item [Line Items] Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of 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Completion [Member] Contracts Accounted for under Percentage of Completion [Member] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Accumulated Depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Company Selected Measure Name Company Selected Measure Name 2025 Five Year Term 2025 Five Year Term [Member] 2025 Five Year Term Accrual for Environmental Remediation Costs Accrual for Environmental Loss Contingencies Equity Security, FV-NI, Contractual Sale Restriction, Nature of Restriction and Circumstance for Lapse Equity Security, FV-NI, Contractual Sale Restriction, Nature of Restriction and Circumstance for Lapse Preferred stock, $1 par value; 10,000,000 shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accelerated Share Repurchases, Adjustment to Recorded Amount Accelerated Share Repurchases, Adjustment to Recorded Amount Trade accounts payable Accounts Payable, Current Mark A. Welsh III [Member] Mark A. 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Payments of employee taxes withheld from share-based awards Payment, Tax Withholding, Share-Based Payment Arrangement Stock Repurchased and Retired During Period, Value Treasury Stock, Value, Acquired, Par Value Method Effect of Tax Legislation Enacted During the Period [Domain] Effect of Tax Legislation Enacted During the Period [Domain] Effect of Tax Legislation Enacted During the Period [Domain] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Sales, operating costs and expenses, and operating income by segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Change in other, net Other Comprehensive Income (Loss), Other Components, Net of Tax Other Comprehensive Income (Loss), Other Components, Net of Tax Nature of Uncertainty [Axis] Nature of Uncertainty [Axis] Total operating costs and expenses Operating Expenses Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Line of Credit Outstanding Long-Term Line of Credit Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Asia/Pacific Asia Pacific [Member] Diluted earnings per share Diluted earnings per share Earnings Per Share, Diluted Accelerated Share Repurchase Initial Receipt (Shares) Accelerated Share Repurchase Initial Receipt (Shares) Accelerated Share Repurchase Initial Receipt (Shares) Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] FAS/CAS operating adjustment FAS/ CAS operating adjustment FAS/ CAS operating adjustment Environmental Remediation Range of Future Costs [Line Items] Environmental Remediation Range of Future Costs [Line Items] [Line Items] for Environmental Remediation Range of Future Costs, the amount accrued within the range and the deferred costs expected to be recoverable through overhead charges on US Government contracts [Table] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Noncash Investing and Financing Activities Related Text Noncash Investing and Financing Activities Related Text Common stock repurchased Stock Repurchased and Retired During Period, Value Stock Repurchased and Retired During Period, Value Cash Performance Units Cash Performance Units [Member] Cash performance units. Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] Sentinel EMD phase [Member] Sentinel EMD phase [Member] Sentinel EMD phase California Franchise Tax Board California Franchise Tax Board [Member] Accelerated Share Repurchases, Date [Domain] Accelerated Share Repurchases, Date [Domain] Award Timing Disclosures [Line Items] Schedule of Inventory, Current [Table Text Block] Schedule of Inventory, Current [Table Text Block] Service cost Defined Benefit Plan, Service Cost Measurement Frequency [Domain] Measurement Frequency [Domain] Accrued employee compensation Employee-related Liabilities, Current EARNINGS PER SHARE, SHARE REPURCHASES AND DIVIDENDS ON COMMON STOCK Equity [Text Block] Fiscal Period Policy Fiscal Period, Policy [Policy Text Block] Restricted Space [Member] Restricted Space [Member] Restricted Space Net earnings Net earnings (from above) Net earnings Net Income (Loss) Attributable to Parent Intersegment OM Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Line of Credit Facility, Covenant Terms, Maximum Debt to Capitalization Ratio Line of Credit Facility, Covenant Terms Property, plant and equipment, net of accumulated depreciation of $9,430 for 2025 and $8,733 for 2024 Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Common stock repurchases Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable, net Increase (Decrease) in Accounts Receivable Effect of Tax Legislation Enacted During the Period [Axis] Effect of Tax Legislation Enacted During the Period [Axis] Effect of Tax Legislation Enacted During the Period Entity Current Reporting Status Entity Current Reporting Status Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating income Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Share Repurchases Class of Treasury Stock [Table Text Block] Corporate [Member] Corporate Segment [Member] Adjustments to reconcile to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Foreign Exchange Forward [Member] Foreign Exchange Forward [Member] Debt Instrument, Covenant Compliance Debt Instrument, Covenant Compliance Environmental Remediation [Table Text Block] Environmental Remediation [Table Text Block] Environmental Remediation Range of Possible Future Costs, Accrued Costs within that range and Deferred Cost expected to be recovered [Table Text Block] Noncash or Part Noncash Acquisition, Fixed Assets Acquired Noncash or Part Noncash Acquisition, Fixed Assets Acquired Net proceeds from issuance of long-term debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Minimum Loss Contingency Minimum Loss Contingency [Member] Minimum Loss Contingency 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] Mission Systems [Member] Mission Systems [Member] Mission Systems reporting segment. Inventoried costs, net Inventory, Net of Allowances, Customer Advances and Progress Billings Retirement Plan Type [Axis] Retirement Plan Type [Axis] Other, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 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] Cost Reimbursable Cost Reimbursable [Member] Cost Reimbursable contract type Variable Rate [Domain] Variable Rate [Domain] US Government US Government [Member] US Government [Member] Unrecognized Tax Benefits Unrecognized Tax Benefits Site Contingency [Line Items] Site Contingency [Line Items] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Shares Retired Treasury Stock, Shares, Retired Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag OPB Other Postretirement Benefits Plan [Member] Termination Date Trading Arrangement Termination Date Effect of New Tax Legislation [Line Items] Effect of New Tax Legislation [Line Items] Effect of New Tax Legislation [Line Items] Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Unbilled receivables, net Increase (Decrease) in Contract with Customer, Asset Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Inventory, Raw Materials, Net of Reserves Inventory, Raw Materials, Net of Reserves Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Weighted-average common shares outstanding, in millions Weighted Average Number of Shares Outstanding, Basic Amount remaining under authorization for share repurchases Share Repurchase Program, Remaining Authorized, Amount Cost of Sales Cost of Product and Service Sold Change in Contract with Customer, Liability [Abstract] Change in Contract with Customer, Liability [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] 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 Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Common Stock, Shares, Issued Common Stock, Shares, Issued Effect of New Tax Legislation [Table] Effect of New Tax Legislation [Table] Effect of New Tax Legislation [Table] Nature of Unrecognized Tax Benefits [Axis] Nature of Unrecognized Tax Benefits [Axis] Nature of Unrecognized Tax Benefits Accounting Estimates Use of Estimates, Policy [Policy Text Block] Lessee, Operating Lease, Lease Not yet Commenced, Value Lessee, Operating Lease, Lease Not yet Commenced, Value Lessee, Operating Lease, Lease Not yet Commenced, Value Trading Arrangement: Trading Arrangement [Axis] Income taxes payable, net Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Loss Contingencies Loss Contingencies [Line Items] Subsequent Events Subsequent Events [Text Block] Change in cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Revenue from External Customers by Contract Type Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Total liabilities Liabilities Marketable Security, Unrealized Gain (Loss) Marketable Security, Unrealized Gain (Loss) Capital Expenditures Incurred but Not yet Paid Capital Expenditures Incurred but Not yet Paid Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Components of net periodic benefit cost Schedule of Costs of Retirement Plans [Table Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other current liabilities Other Liabilities, Current Pension and other postretirement benefit plan liabilities Liability, Defined Benefit Plan, Noncurrent Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Variable Rate [Axis] Variable Rate [Axis] Extinguishment of Debt, Amount Extinguishment of Debt, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Share Repurchases - Notes to Table Share Repurchases Table Abstract Share Repuchase Table Footnotes, detail tags Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Cash and Cash Equivalent Increase (Decrease) in Deferred Income Taxes Increase (Decrease) in Deferred Income Taxes Common stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] (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