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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	$ 4	$ (14)	$ (11)	$ (8)
Net sales | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	0	3	(1)	3
Cost of products sold | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	0	(3)	1	(2)
Foreign exchange | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	$ 4	$ (14)	$ (11)	$ (9)