Derivative and Other Financial Instruments - Notional Values of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Foreign exchange | Derivatives not designated as hedges
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 990	$ 1,017
Foreign exchange | Derivatives in cash flow hedges
Derivatives, Fair Value [Line Items]
Derivative, notional amount	410	1,030
Foreign exchange | Derivatives in fair value hedges
Derivatives, Fair Value [Line Items]
Derivative, notional amount	165	142
Foreign exchange | Derivatives designated as net investment hedges
Derivatives, Fair Value [Line Items]
Derivative, notional amount	1,075	1,075
Commodities | Derivatives in cash flow hedges
Derivatives, Fair Value [Line Items]
Derivative, notional amount	287	334
Interest Rate Swap | Derivatives in cash flow hedges
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 200	$ 200