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OTHER - Contract Estimates - Consolidated Net Profit Booking Rate Adjustments (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 28, 2025 | Sep. 29, 2024 | Sep. 28, 2025 | Sep. 29, 2024
Accounting Policies [Abstract] |  |  |  |
Sales | $ 371 | $ 358 | $ 681 | $ 1,013
Segment operating profit | $ 365 | $ 375 | $ (200) | $ 990
% of segment operating profit | 18.00% | 20.00% | (4.00%) | 18.00%
Net earnings | $ 288 | $ 296 | $ (158) | $ 782
Diluted earnings per share (in dollars per share) | $ 1.24 | $ 1.24 | $ (0.67) | $ 3.26

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