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Revenue - Revenue by Customer (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Apr. 05, 2026 | Mar. 30, 2025
Revenue [Line Items] |  |
Total revenue | $ 13,481 | $ 12,223
Department of War (DoW) |  |
Revenue [Line Items] |  |
Total revenue | 7,626 | 6,845
Non-DoW |  |
Revenue [Line Items] |  |
Total revenue | 1,283 | 1,250
U.S. Government - Foreign Military Sales (FMS) |  |
Revenue [Line Items] |  |
Total revenue | 230 | 255
Total U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 9,139 | 8,350
U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 1,804 | 1,330
Non-U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 1,253 | 945
Non-U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 1,285 | 1,598
Aerospace |  |
Revenue [Line Items] |  |
Total revenue | 3,279 | 3,026
Aerospace | Department of War (DoW) |  |
Revenue [Line Items] |  |
Total revenue | 71 | 65
Aerospace | Non-DoW |  |
Revenue [Line Items] |  |
Total revenue | 6 | 0
Aerospace | U.S. Government - Foreign Military Sales (FMS) |  |
Revenue [Line Items] |  |
Total revenue | 0 | 5
Aerospace | Total U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 77 | 70
Aerospace | U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 1,706 | 1,224
Aerospace | Non-U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 235 | 171
Aerospace | Non-U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 1,261 | 1,561
Marine Systems |  |
Revenue [Line Items] |  |
Total revenue | 4,343 | 3,589
Marine Systems | Department of War (DoW) |  |
Revenue [Line Items] |  |
Total revenue | 4,310 | 3,558
Marine Systems | Non-DoW |  |
Revenue [Line Items] |  |
Total revenue | 0 | 0
Marine Systems | U.S. Government - Foreign Military Sales (FMS) |  |
Revenue [Line Items] |  |
Total revenue | 32 | 29
Marine Systems | Total U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 4,342 | 3,587
Marine Systems | U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 0 | 1
Marine Systems | Non-U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 1 | 1
Marine Systems | Non-U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 0 | 0
Combat Systems |  |
Revenue [Line Items] |  |
Total revenue | 2,283 | 2,176
Combat Systems | Department of War (DoW) |  |
Revenue [Line Items] |  |
Total revenue | 1,177 | 1,210
Combat Systems | Non-DoW |  |
Revenue [Line Items] |  |
Total revenue | 2 | 2
Combat Systems | U.S. Government - Foreign Military Sales (FMS) |  |
Revenue [Line Items] |  |
Total revenue | 195 | 218
Combat Systems | Total U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 1,374 | 1,430
Combat Systems | U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 37 | 59
Combat Systems | Non-U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 858 | 658
Combat Systems | Non-U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 14 | 29
Technologies |  |
Revenue [Line Items] |  |
Total revenue | 3,576 | 3,432
Technologies | Department of War (DoW) |  |
Revenue [Line Items] |  |
Total revenue | 2,068 | 2,012
Technologies | Non-DoW |  |
Revenue [Line Items] |  |
Total revenue | 1,275 | 1,248
Technologies | U.S. Government - Foreign Military Sales (FMS) |  |
Revenue [Line Items] |  |
Total revenue | 3 | 3
Technologies | Total U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 3,346 | 3,263
Technologies | U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | 61 | 46
Technologies | Non-U.S. government |  |
Revenue [Line Items] |  |
Total revenue | 159 | 115
Technologies | Non-U.S. commercial |  |
Revenue [Line Items] |  |
Total revenue | $ 10 | $ 8

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