Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 58	$ 36
Period of cash outlays for severance expected to be paid out	2 years
Medical Devices
Restructuring Reserve [Roll Forward]
Reserve balance beginning	$ 180
Restructuring charges	118
Payments for Restructuring	(105)
Restructuring Reserve, Settled without Cash	(28)
Reserve balance ending	165
Medical Devices | Employee Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning	164
Restructuring charges	0
Payments for Restructuring	(6)
Restructuring Reserve, Settled without Cash	0
Reserve balance ending	158
Medical Devices | Asset Write-off
Restructuring Reserve [Roll Forward]
Reserve balance beginning	0
Restructuring charges	11
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash	(11)
Reserve balance ending	0
Medical Devices | Other Restructuring
Restructuring Reserve [Roll Forward]
Reserve balance beginning	16
Restructuring charges	107
Payments for Restructuring	(99)
Restructuring Reserve, Settled without Cash	(17)
Reserve balance ending	$ 7