Financial Instruments Notional Amounts (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 721	$ 0	$ 0
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	165	570	76
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	770	582	1,558
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 19	$ 0	$ 38