Equity - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense		$ 54	$ 58	$ 110	$ 117
Net experience (gain) loss		1	1	2	2
Total before tax		421	532	956	1,014
Tax expense (benefit)		(97)	(144)	(209)	(253)
Net income		326	385	750	756
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Net income		3	7	5	10
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax		4	10	8	15
Tax expense (benefit)		(1)	(3)	(2)	(4)
Net income		3	7	6	11
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	[1]	4	10	8	15
Reclassification out of Accumulated Other Comprehensive Income | Amortization of postretirement and postemployment benefits
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax		(1)	(1)	(2)	(2)
Tax expense (benefit)		1	1	1	1
Net income		0	0	(1)	(1)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of postretirement and postemployment benefits | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Net experience (gain) loss	[2]	$ (1)	$ (1)	$ (2)	$ (2)

[1] See Derivative instruments and fair value measurements note

[2] See Employee benefits note