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Contract Assets and Contract Liabilities (Details) - USD ($)
$ in Millions
Apr. 02, 2021
Jan. 01, 2021
Revenue from Contract with Customer [Abstract]    
Contract assets $ 2,577 $ 2,437
Contract liabilities, current (1,189) (1,198)
Contract liabilities, non-current (84) (73)
Net contract assets 1,304 1,166
Components of Contract Assets:    
Unbilled contract receivables, gross 4,441 4,268
Progress payments and advances (1,864) (1,831)
Contract assets $ 2,577 $ 2,437