Shareholders' Equity - Accumulated Other Comprehensive Loss and Other Comprehensive Income (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 6,815	$ 5,845
Other comprehensive loss before reclassifications	(100)	(11)
Reclassified from Accumulated other comprehensive loss	34	74
Balance at end of period	6,801	6,101
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(789)	(1,739)
Balance at end of period	(855)	(1,676)
Pension and Postretirement Benefits Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(799)	(1,780)
Other comprehensive loss before reclassifications	0	0
Reclassified from Accumulated other comprehensive loss	34	60
Balance at end of period	(765)	(1,720)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	9	42
Other comprehensive loss before reclassifications	(104)	(17)
Reclassified from Accumulated other comprehensive loss	0	14
Balance at end of period	(95)	39
Deferred Gains (Losses) on Hedge Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	1	(1)
Other comprehensive loss before reclassifications	4	6
Reclassified from Accumulated other comprehensive loss	0	0
Balance at end of period	$ 5	$ 5