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Business Divestitures - Pre-tax Business Divestiture-related Gain (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 02, 2021 | Apr. 02, 2021 | Jul. 03, 2020 | Jul. 02, 2021 | Jul. 03, 2020 | Jan. 01, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | $ 180 |  | $ (49) | $ 165 | $ (52) |
Non-cash goodwill impairment charge |  |  |  | 62 | 369 |
Held-for-sale or Disposed of by Sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | 180 |  | (49) | 165 | (52) |
Held-for-sale or Disposed of by Sale | VSE disposal group |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | (18) |  | (14) | (26) | (14) |
Held-for-sale or Disposed of by Sale | CPS business |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | (12) |  | 0 | (19) | 0 |
Held-for-sale or Disposed of by Sale | Military training business |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | 212 |  | 0 | 212 | 0 |
Held-for-sale or Disposed of by Sale | Airport security and automation business |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | 0 |  | (23) | 0 | (26) |
Held-for-sale or Disposed of by Sale | Other |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | $ (2) |  | (12) | $ (2) | $ (12) |
Held-for-sale | VSE disposal group |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) |  |  | 18 |  |  |
Held-for-sale | VSE disposal group | Aviation Systems |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Non-cash goodwill impairment charge |  |  | $ 14 |  |  | $ 14
Held-for-sale | CPS business | Aviation Systems |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Non-cash goodwill impairment charge |  | $ 62 |  |  |  |
Disposed of by Sale | Other |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Non-cash working capital adjustment |  |  |  |  |  | $ 12

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