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Revenue - Revenue by Contract Type (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Apr. 05, 2026 | Mar. 30, 2025
Revenue [Line Items] |  |
Total revenue | $ 13,481 | $ 12,223
Fixed-price |  |
Revenue [Line Items] |  |
Total revenue | 8,307 | 7,770
Cost-reimbursement |  |
Revenue [Line Items] |  |
Total revenue | 4,193 | 3,644
Time-and-materials |  |
Revenue [Line Items] |  |
Total revenue | 981 | 809
Aerospace |  |
Revenue [Line Items] |  |
Total revenue | 3,279 | 3,026
Aerospace | Fixed-price |  |
Revenue [Line Items] |  |
Total revenue | 2,975 | 2,753
Aerospace | Cost-reimbursement |  |
Revenue [Line Items] |  |
Total revenue | 0 | 0
Aerospace | Time-and-materials |  |
Revenue [Line Items] |  |
Total revenue | 304 | 273
Marine Systems |  |
Revenue [Line Items] |  |
Total revenue | 4,343 | 3,589
Marine Systems | Fixed-price |  |
Revenue [Line Items] |  |
Total revenue | 1,976 | 1,724
Marine Systems | Cost-reimbursement |  |
Revenue [Line Items] |  |
Total revenue | 2,366 | 1,865
Marine Systems | Time-and-materials |  |
Revenue [Line Items] |  |
Total revenue | 1 | 0
Combat Systems |  |
Revenue [Line Items] |  |
Total revenue | 2,283 | 2,176
Combat Systems | Fixed-price |  |
Revenue [Line Items] |  |
Total revenue | 1,946 | 1,848
Combat Systems | Cost-reimbursement |  |
Revenue [Line Items] |  |
Total revenue | 311 | 310
Combat Systems | Time-and-materials |  |
Revenue [Line Items] |  |
Total revenue | 26 | 18
Technologies |  |
Revenue [Line Items] |  |
Total revenue | 3,576 | 3,432
Technologies | Fixed-price |  |
Revenue [Line Items] |  |
Total revenue | 1,410 | 1,445
Technologies | Cost-reimbursement |  |
Revenue [Line Items] |  |
Total revenue | 1,516 | 1,469
Technologies | Time-and-materials |  |
Revenue [Line Items] |  |
Total revenue | $ 650 | $ 518

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