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Revenue - Revenue by Customer (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
U.S. Government - DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 5,307 | 5,276 | 10,598 | 10,417
U.S. Government - Non-DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,181 | 1,298 | 2,427 | 2,550
U.S. Government - Foreign Military Sales (FMS) |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 134 | 127 | 290 | 303
Total U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 6,622 | 6,701 | 13,315 | 13,270
U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,202 | 1,061 | 2,407 | 2,042
Non-U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 863 | 936 | 1,771 | 1,989
Non-U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 502 | 522 | 1,088 | 1,308
Aerospace |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,867 | 1,622 | 3,770 | 3,509
Aerospace | U.S. Government - DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 80 | 72 | 160 | 130
Aerospace | U.S. Government - Non-DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Aerospace | U.S. Government - Foreign Military Sales (FMS) |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 49 | 18 | 82 | 37
Aerospace | Total U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 129 | 90 | 242 | 167
Aerospace | U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,088 | 982 | 2,198 | 1,839
Aerospace | Non-U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 179 | 50 | 299 | 240
Aerospace | Non-U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 471 | 500 | 1,031 | 1,263
Marine Systems |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 2,651 | 2,536 | 5,302 | 5,019
Marine Systems | U.S. Government - DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 2,620 | 2,492 | 5,225 | 4,912
Marine Systems | U.S. Government - Non-DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 1 | 4
Marine Systems | U.S. Government - Foreign Military Sales (FMS) |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 29 | 41 | 73 | 97
Marine Systems | Total U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 2,649 | 2,533 | 5,299 | 5,013
Marine Systems | U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1 | 1 | 1 | 2
Marine Systems | Non-U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1 | 0 | 2 | 2
Marine Systems | Non-U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 0 | 2 | 0 | 2
Combat Systems |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,666 | 1,899 | 3,341 | 3,719
Combat Systems | U.S. Government - DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 940 | 954 | 1,795 | 1,870
Combat Systems | U.S. Government - Non-DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 3 | 3 | 5 | 5
Combat Systems | U.S. Government - Foreign Military Sales (FMS) |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 50 | 62 | 119 | 149
Combat Systems | Total U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 993 | 1,019 | 1,919 | 2,024
Combat Systems | U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 60 | 42 | 105 | 108
Combat Systems | Non-U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 590 | 822 | 1,275 | 1,554
Combat Systems | Non-U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 23 | 16 | 42 | 33
Technologies |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 3,005 | 3,163 | 6,168 | 6,362
Technologies | U.S. Government - DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,667 | 1,758 | 3,418 | 3,505
Technologies | U.S. Government - Non-DoD |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 1,178 | 1,295 | 2,421 | 2,541
Technologies | U.S. Government - Foreign Military Sales (FMS) |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 6 | 6 | 16 | 20
Technologies | Total U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 2,851 | 3,059 | 5,855 | 6,066
Technologies | U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 53 | 36 | 103 | 93
Technologies | Non-U.S. government |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | 93 | 64 | 195 | 193
Technologies | Non-U.S. commercial |  |  |  |
Revenue [Line Items] |  |  |  |
Total revenue | $ 8 | $ 4 | $ 15 | $ 10

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