Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 58	$ 36
Supply Chain
Restructuring Cost and Reserve [Line Items]
Restructuring charges	118
Restructuring charges recorded to date	1,000
Supply Chain | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	58
Supply Chain | Cost of products sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	15
Supply Chain | Other (income) expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	45
Supply Chain | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring estimated cost	1,900
Cost savings expected	600
Supply Chain | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring estimated cost	2,300
Cost savings expected	800
Medical Devices
Restructuring Cost and Reserve [Line Items]
Restructuring charges	118
Medical Devices
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100	$ 100
Medical Devices | Supply Chain | Minimum
Restructuring Cost and Reserve [Line Items]
Period for activity	4 years
Medical Devices | Supply Chain | Maximum
Restructuring Cost and Reserve [Line Items]
Period for activity	5 years