Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jul. 04, 2020	Jul. 03, 2021	Jul. 04, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 183	$ (92)	$ 354	$ (42)
Other comprehensive income, net of tax
Pension and postretirement benefits adjustments, net of reclassifications	30	36	60	73
Foreign currency translation adjustments, net of reclassifications	15	30	(3)	(10)
Deferred gains (losses) on hedge contracts, net of reclassifications	2	2	6	(7)
Other comprehensive income	47	68	63	56
Comprehensive income (loss)	$ 230	$ (24)	$ 417	$ 14