Derivative and Other Financial Instruments - Fair Value Hedges and Contracts Not Designated as Hedges (Details) - Derivatives not designated as hedges - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	$ (15)	$ (8)	$ (25)	$ (16)
Net sales | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	(2)	4	(3)	7
Cost of products sold | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	1	(4)	3	(6)
Foreign exchange | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	$ (14)	$ (8)	$ (25)	$ (17)