Revenue - Impact of Adjustments in Contract Estimates (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Change in Accounting Estimate [Line Items]
Total revenue	$ 10,152	$ 9,189	$ 20,033	$ 18,581
Operating Earnings	962	978	1,900	1,886
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate [Line Items]
Total revenue	58	112	152	219
Operating Earnings	$ 10	$ 101	$ 87	$ 206
Diluted earnings per share (in dollars per share)	$ 0.03	$ 0.29	$ 0.25	$ 0.58