Equity - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions		3 Months Ended
		Apr. 03, 2021	Mar. 28, 2020
Derivative Instruments, Gain (Loss) [Line Items]
COGS		$ 2,418	$ 2,268
SG&A		(694)	(685)
Interest expense		59	64
Net experience (gain) loss		1	1
Other (Income) expense		69	51
Total before tax		482	446
Tax expense (benefit)		(109)	(94)
Net income		371	350
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Net income		3	1
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax		5	2
Tax expense (benefit)		(1)	0
Net income		4	2
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]	5	2
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