Equity - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions		3 Months Ended
		Apr. 02, 2022	Apr. 03, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense		$ 56	$ 59
Net experience (gain) loss		1	1
Total before tax		535	482
Tax expense (benefit)		(112)	(109)
Net income		424	371
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Net income		2	3
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax		4	5
Tax expense (benefit)		(1)	(1)
Net income		3	4
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	5
Reclassification out of Accumulated Other Comprehensive Income | Amortization of postretirement and postemployment benefits
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax		(1)	(1)
Tax expense (benefit)		0	0
Net income		(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)

[1] See Derivative instruments and fair value measurements note

[2] See Employee benefits note