Financial Instruments - Economic Hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Embedded derivatives, gain	$ 7
Embedded derivatives, loss		$ 2
Not designated as hedging instrument, economic hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total	63	3
Not designated as hedging instrument, economic hedge | Currency exchange contracts | Cost of goods sold
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) from derivatives	(8)	3
Not designated as hedging instrument, economic hedge | Currency exchange contracts | Selling, general and administrative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) from derivatives	65	(1)
Not designated as hedging instrument, economic hedge | Commodity derivatives | Cost of goods sold
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) from derivatives	(2)	2
Not designated as hedging instrument, economic hedge | Other derivatives | Other non-operating income, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) from derivatives	$ 8	$ (1)