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CONTRACT ASSETS AND LIABILITIES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 27, 2020
Sep. 29, 2019
Sep. 27, 2020
Sep. 29, 2019
Revenue from Contract with Customer [Abstract]        
Increase in contract assets     $ 1,294 $ 1,532
Impairment loss $ 0 $ 0 0 0
Increase in contract liabilities     300 286
Liability, revenue recognized $ 919 $ 688 $ 3,500 $ 3,600