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Revenue - Revenue by Products and Services (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2022 | Jul. 04, 2021 | Jul. 03, 2022 | Jul. 04, 2021
Revenue [Line Items] |  |  |  |  |
Total revenue |  | $ 9,189 | $ 9,220 | $ 18,581 | $ 18,609
Aerospace |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 1,867 | 1,622 | 3,770 | 3,509
Aerospace | Aircraft manufacturing |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 1,112 | 1,072 | 2,374 | 2,444
Aerospace | Aircraft services |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 755 | 550 | 1,396 | 1,065
Marine Systems |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 2,651 | 2,536 | 5,302 | 5,019
Marine Systems | Nuclear-powered submarines |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 1,710 | 1,679 | 3,472 | 3,398
Marine Systems | Surface ships |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 611 | 585 | 1,204 | 1,113
Marine Systems | Repair and other services |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 330 | 272 | 626 | 508
Combat Systems |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 1,666 | 1,899 | 3,341 | 3,719
Combat Systems | Military vehicles |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 1,084 | 1,231 | 2,179 | 2,434
Combat Systems | Weapons systems, armament and munitions |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 418 | 511 | 834 | 971
Combat Systems | Engineering and other services |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 164 | 157 | 328 | 314
Technologies |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 3,005 | 3,163 | 6,168 | 6,362
Technologies | Information technology (IT) services |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue |  | 2,010 | 2,071 | 4,150 | 4,156
Technologies | C5ISR* solutions |  |  |  |  |
Revenue [Line Items] |  |  |  |  |
Total revenue | [1] | $ 995 | $ 1,092 | $ 2,018 | $ 2,206
[1] | Command, control, communications, computers, cyber, intelligence, surveillance and reconnaissance

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