Contract Assets and Contract Liabilities (Details) - USD ($) $ in Millions	Jul. 03, 2020	Jan. 03, 2020
Revenue from Contract with Customer [Abstract]
Contract assets	$ 2,281	$ 2,459
Contract liabilities, current	(1,106)	(1,214)
Contract liabilities, non-current	(76)	(87)
Net contract assets	1,099	1,158
Components of Contract Assets:
Unbilled contract receivables, gross	3,890	3,690
Progress payments and advances	(1,609)	(1,231)
Contract assets	$ 2,281	$ 2,459