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Restructuring - Summary of Severance Charges and Associated Spending (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Restructuring charges	$ (251)	$ (128)	$ (142)	$ (90)	$ (227)		$ (176)		$ (266)	$ (251)	$ (309)
Supply Chain
Restructuring Reserve [Roll Forward]
Reserve balance ending	180								180
Supply Chain \| Severance
Restructuring Reserve [Roll Forward]
Reserve balance ending	164								164
Supply Chain \| Asset Write-offs
Restructuring Reserve [Roll Forward]
Reserve balance ending	0								0
Supply Chain \| Other(2)
Restructuring Reserve [Roll Forward]
Reserve balance ending	$ 16								16
Medical Devices
Restructuring Reserve [Roll Forward]
Restructuring charges						$ (190)		$ (107)	(400)
Supply Chain
Restructuring Reserve [Roll Forward]
Reserve balance beginning				242					242
Activity during the period										(25)
Restructuring charges									(611)
Cash payments									(454)
Settled non cash									(219)
Reserve balance ending					242					242
Supply Chain \| Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning				194					194
Activity during the period										(35)
Restructuring charges									0
Cash payments									(30)
Settled non cash									0
Reserve balance ending					194					194
Supply Chain \| Asset Write-offs
Restructuring Reserve [Roll Forward]
Reserve balance beginning				0					0
Activity during the period										0
Restructuring charges									(151)
Cash payments									0
Settled non cash									(151)
Reserve balance ending					0					0
Supply Chain \| Other(2)
Restructuring Reserve [Roll Forward]
Reserve balance beginning				$ 48					48
Activity during the period										10
Restructuring charges									(460)
Cash payments									(424)
Settled non cash									$ (68)
Reserve balance ending					$ 48					48
Medical Devices
Restructuring Reserve [Roll Forward]
Reserve balance beginning								267		267
Reserve balance ending											267
Medical Devices \| Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning								229		229
Reserve balance ending											229
Medical Devices \| Asset Write-offs
Restructuring Reserve [Roll Forward]
Reserve balance beginning								0		0
Reserve balance ending											0
Medical Devices \| Other(2)
Restructuring Reserve [Roll Forward]
Reserve balance beginning								$ 38		$ 38
Reserve balance ending											$ 38