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OTHER - Contract Estimates (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 29, 2024 | Sep. 24, 2023 | Sep. 29, 2024 | Sep. 24, 2023 | Mar. 31, 2024
Change in Accounting Estimate [Line Items] |  |  |  |  |
Net profit booking rate adjustments increased sales | $ 358 | $ 231 | $ 1,000 | $ 1,000 |
Adjustments increased segment operating profit | 375 | 335 | 990 | 1,100 |
Increase in net income (loss) | $ 296 | $ 265 | $ 782 | $ 881 |
Increase in diluted earnings per common share due to profit rate adjustments (in dollars per share) | $ 1.24 | $ 1.06 | $ 3.26 | $ 3.48 |
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
Cumulative gain on development |  |  |  |  | $ 150
Additional options of potential loss |  |  | 1,300 |  |
Aeronautics |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Loss on disposition of business | 80 |  | 145 |  |
Aeronautics | Classified Fixed-Price Incentive Fee Contract |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |
Additional losses | 80 |  | 145 |  |
Cumulative gain on development | $ 415 |  | $ 415 |  |

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