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Business Combination - Pro Forma Results (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2020 | Jun. 28, 2019 | Jul. 03, 2020 | Jun. 28, 2019
Business Acquisition [Line Items] |  |  |  |
Revenue from product sales and services — as reported | $ 4,445 | $ 1,865 | $ 9,071 | $ 3,593
Income from continuing operations — as reported | $ 278 | 269 | $ 473 | 512
L3Harris |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenue from product sales and services — as reported |  | 1,865 |  | 3,593
Revenue from product sales and services — pro forma |  | 4,448 |  | 8,834
Income from continuing operations — as reported |  | 269 |  | 512
Income from continuing operations — pro forma |  | $ 417 |  | $ 817

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