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INFORMATION ON BUSINESS SEGMENTS - Total Assets For Each Business Segment (Details) - USD ($) $ in Millions | Mar. 29, 2020 | Dec. 31, 2019
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Segment Reporting Information [Line Items] |  |
Total assets | $ 49,248 | $ 47,528
Business segments |  |
Segment Reporting Information [Line Items] |  |
Total assets | 40,278 | 38,734
Business segments | Aeronautics |  |
Segment Reporting Information [Line Items] |  |
Total assets | 10,003 | 9,109
Business segments | Missiles and Fire Control |  |
Segment Reporting Information [Line Items] |  |
Total assets | 5,210 | 5,030
Business segments | Rotary and Mission Systems |  |
Segment Reporting Information [Line Items] |  |
Total assets | 18,901 | 18,751
Business segments | Space |  |
Segment Reporting Information [Line Items] |  |
Total assets | 6,164 | 5,844
Corporate |  |
Segment Reporting Information [Line Items] |  |
Total assets | $ 8,970 | $ 8,794

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