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OTHER - Contract Estimates (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 25, 2023 | Jun. 30, 2024 | Jun. 25, 2023 | Mar. 31, 2024
Change in Accounting Estimate [Line Items] |  |  |  |  |
Net profit booking rate adjustments increased sales | $ 383 | $ 359 | $ 655 | $ 792 |
Adjustments increased segment operating profit | 420 | 365 | 615 | 780 |
Increase in net income (loss) | $ 332 | $ 288 | $ 486 | $ 616 |
Increase in diluted earnings per common share due to profit rate adjustments (in dollars per share) | $ 1.39 | $ 1.14 | $ 2.02 | $ 2.42 |
Contracts Accounted for under Percentage of Completion |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Cumulative gain on development | $ 100 |  | $ 100 |  |
Canadian Government |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Contract assets | 970 |  | 970 |  |
Canadian Maritime Helicopter Program |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Reach-forward loss | 100 |  | 100 |  |
Favorable profit adjustments |  | $ 65 |  |  |
Missiles and Fire Control |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Reach-forward loss | 100 |  | 100 |  | $ 100
Cumulative gain on development | 150 |  | 150 |  |
Additional options of potential loss |  |  | 1,300 |  |
Aeronautics | Classified Fixed-Price Incentive Fee Contract |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Additional losses | 45 |  | 45 |  |
Cumulative gain on development | $ 335 |  | $ 335 |  |

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