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Business Divestitures - Income Before Income Taxes of Held for Sale or Divested Businesses (Details) - Held-for-sale or Disposed of by Sale - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2021 | Oct. 02, 2020 | Oct. 01, 2021 | Oct. 02, 2020
Electron Devices business |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net income (loss) before income taxes of disposal group | $ 11 | $ 8 | $ 41 | $ 23
CPS business |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net income (loss) before income taxes of disposal group | 0 | 16 | 53 | 44
Military training business |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net income (loss) before income taxes of disposal group | $ 0 | $ 17 | $ 35 | $ 57

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