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PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jan. 03, 2020
Dec. 28, 2018
Jan. 01, 2021
Jan. 03, 2020
Jun. 28, 2019
Jun. 29, 2018
Property, Plant and Equipment [Abstract]            
Depreciation and amortization expense related to property, plant and equipment $ 157   $ 318   $ 138 $ 143
Property, Plant and Equipment [Line Items]            
Non-cash impairment charges of long-lived assets $ 46 $ 0 767 $ 46 $ 0 $ 0
Commercial Aviation Solutions            
Property, Plant and Equipment [Line Items]            
Non-cash impairment charges of long-lived assets     257      
Impairment of property, plant and equipment     $ 103