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Business Divestitures - Pre-tax Business Divestiture-related Gain (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 01, 2021 | Apr. 02, 2021 | Oct. 02, 2020 | Oct. 01, 2021 | Oct. 02, 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) | $ 27 |  | $ (10) | $ 192 | $ (62) |
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) | 27 |  | (10) | 192 | (62) |
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) | (4) |  | (10) | (30) | (24) |
Held-for-sale or Disposed of by Sale | Electron Devices business |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Total Business divestiture-related gain (losses) | 29 |  | 0 | 29 | 0 |
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) | 0 |  | 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) | 2 |  | 0 | 214 | 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 |  | (2) | 0 | (28) |
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) | $ 0 |  | $ 2 | $ (2) | (10) |
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 |
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 to decrease gain initially recognized on sale of business |  |  |  |  |  | $ 12

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