Fair Value Measurements and Financial Instruments - Fair Value of Derivative Instruments and Other Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Designated derivative instruments
Derivative assets, designated	$ 74	$ 10
Derivative liabilities, designated	18	29
Other financial instruments
Total other financial instruments	43	23
Other current assets
Other financial instruments
Marketable securities	43	23
Other current assets | Interest rate swap contracts
Designated derivative instruments
Derivative assets, designated	0	0
Other current assets | Foreign currency contracts
Designated derivative instruments
Derivative assets, designated	58	6
Other current assets | Commodity contracts
Designated derivative instruments
Derivative assets, designated	0	0
Other assets | Interest rate swap contracts
Designated derivative instruments
Derivative assets, designated	16	4
Other assets | Foreign currency contracts
Designated derivative instruments
Derivative assets, designated	0	0
Other accruals | Interest rate swap contracts
Designated derivative instruments
Derivative liabilities, designated	0	0
Other accruals | Foreign currency contracts
Designated derivative instruments
Derivative liabilities, designated	8	15
Other accruals | Commodity contracts
Designated derivative instruments
Derivative liabilities, designated	1	0
Other liabilities | Interest rate swap contracts
Designated derivative instruments
Derivative liabilities, designated	0	0
Other liabilities | Foreign currency contracts
Designated derivative instruments
Derivative liabilities, designated	$ 9	$ 14