Fair Value Measurements and Financial Instruments - Schedule of Gain (Loss) Included in OCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flow hedges [Abstract]
Gain (loss) recognized in OCI	$ 25	$ (2)
Foreign Currency Contracts
Cash flow hedges [Abstract]
Gain (loss) recognized in OCI	25	(3)
Net investment hedges [Abstract]
Gain (loss) on instruments	25	6
Gain (loss) on hedged items	(25)	(6)
Commodity Contracts
Cash flow hedges [Abstract]
Gain (loss) recognized in OCI	0	1
Foreign Currency Debt
Net investment hedges [Abstract]
Gain (loss) on instruments	65	29
Gain (loss) on hedged items	$ (65)	$ (29)