Revenue (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue, OTLs and STLs	$ 117	$ 117	$ 241	$ 234
Contract with customer, assets, net	88		88		$ 75
Contract with customer, liabilities	$ 2,000		2,000		$ 1,800
Contract with customer, liabilities, revenue recognized			$ 995	$ 775