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BUSINESS COMBINIATION - Pro Forma Results (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 03, 2020 | Dec. 28, 2018 | Jun. 28, 2019 | Jun. 29, 2018 | Jun. 30, 2017
Business Acquisition [Line Items] |  |  |  |  |
Revenue from product sales and services — as reported | $ 9,263 | $ 3,208 | $ 6,801 | $ 6,168 | $ 5,897
Income from continuing operations — as reported | $ 835 | 441 | $ 953 | $ 702 | $ 628
L3Harris |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Revenue from product sales and services — as reported |  | 3,208 |  |  |
Revenue from product sales and services — pro forma |  | 8,404 |  |  |
Income from continuing operations — as reported |  | 441 |  |  |
Income from continuing operations — pro forma |  | $ 760 |  |  |

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