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OTHER - Investments in Advanced Military Maintenance, Repair and Overhaul Center LLC (AMMROC) (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 31, 2020 | Jun. 28, 2020 | Jun. 27, 2021 | Jun. 28, 2020
Investment Holdings [Line Items] |  |  |  |
Equity method investment impairment |  |  | $ 0 | $ 128
AMMROC |  |  |  |
Investment Holdings [Line Items] |  |  |  |
Proceeds from sale of investment | $ 307 |  | $ 231 |
Equity method investments |  | $ 307 |  | $ 307
Equity method investment impairment |  | 128 |  |
Equity method investment impairment, after tax |  | $ 96 |  |
Equity method investment impairment (in dollars per share) |  | $ 0.34 |  |

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