Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 36	$ 42
Medical Devices
Restructuring Reserve [Roll Forward]
Reserve balance beginning	242
Restructuring charges	90
Payments for Restructuring	(109)
Restructuring Reserve, Settled without Cash	(23)
Reserve balance ending	200
Medical Devices | Employee Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning	194
Restructuring charges	0
Payments for Restructuring	(1)
Restructuring Reserve, Settled without Cash	0
Reserve balance ending	193
Medical Devices | Asset Write-off
Restructuring Reserve [Roll Forward]
Reserve balance beginning	0
Restructuring charges	23
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash	(23)
Reserve balance ending	0
Medical Devices | Other Restructuring
Restructuring Reserve [Roll Forward]
Reserve balance beginning	48
Restructuring charges	67
Payments for Restructuring	(108)
Restructuring Reserve, Settled without Cash	0
Reserve balance ending	$ 7