Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 61	$ 57	$ 119	$ 93
Supply Chain
Restructuring Cost and Reserve [Line Items]
Restructuring charges	115		233
Restructuring charges recorded to date	1,100		1,100
Supply Chain | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	61		119
Supply Chain | Cost of products sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	22		37
Supply Chain | Other (income) expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	32		77
Supply Chain | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring estimated cost	1,900		1,900
Cost savings expected	600		600
Supply Chain | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring estimated cost	2,300		2,300
Cost savings expected	800		800
Medical Devices
Restructuring Cost and Reserve [Line Items]
Restructuring charges			233
Medical Devices
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100	$ 100	$ 200	$ 200
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