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CONTRACT ASSETS AND LIABILITIES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 28, 2020
Jun. 30, 2019
Jun. 28, 2020
Jun. 30, 2019
Revenue from Contract with Customer [Abstract]        
Increase in contract assets     $ 727 $ 916
Impairment loss $ 0 $ 0 0 0
Increase in contract liabilities     427 275
Liability, revenue recognized $ 1,000 $ 1,100 $ 2,600 $ 2,900