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OTHER - Contract Estimates (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 29, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Jun. 29, 2025 | Jun. 30, 2024
Change in Accounting Estimate [Line Items] |  |  |  |  |
Program losses |  |  |  | $ 1,615 | $ 165
Contract liabilities | $ 9,861 | $ 9,795 |  | 9,861 |
TUHP |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Program losses | 95 |  |  |  |
Cumulative losses on development | 130 |  |  | 130 |
Aeronautics | Classified Program |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Program losses | 950 |  |  |  |
Favorable profit adjustments |  |  |  | 80 |
Contract liabilities | 583 |  |  | 583 |
Aeronautics | Classified Program | Initial Phase |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Reach-forward loss | 690 |  |  | 730 |
Cumulative losses on development | 1,400 |  |  | 1,400 |
Aeronautics | Classified Program | Additional Phases |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Reach-forward loss | 260 |  |  | 95 |
Cumulative losses on development | 355 |  |  | 355 |
Rotary and Mission Systems | CMHP |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Program losses | 570 |  |  |  |
Cumulative losses on development | 670 |  |  | 670 |
Contract assets | 680 |  |  | 680 |
Rotary and Mission Systems | TUHP |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Program losses | 95 |  |  |  |
Space | Commercial Civil Space Program |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Favorable profit adjustments |  |  |  | 125 |
Missiles and Fire Control | Classified Program |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Reach-forward loss |  | $ 1,310 | $ 100 |  | $ 100
Cumulative losses on development | 1,460 |  |  | 1,460 |
Contract liabilities | $ 1,300 |  |  | $ 1,300 |

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