Financial Instruments Cash Flow Hedges Included in AOCI (Details) € in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 EUR (€)	Dec. 31, 2019 USD ($)
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity			2 years
Beginning Balance	$ (15)	$ (25)	$ 2	$ (26)
Additions and revaluations of derivatives designated as cash flow hedges	(22)	16	(44)	12
Clearance of hedge results to earnings	21	6	26	11
Ending Balance	(16)	(3)	(16)	(3)
After-tax net (loss) gain to be reclassified from AOCL into earnings over the next twelve months			(18)
Derivative, Notional Amount	165	76	$ 165	76		$ 570
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity			2 years
Beginning Balance	16		$ 0
Additions and revaluations of derivatives designated as cash flow hedges	3		19
Ending Balance	19		19
After-tax net (loss) gain to be reclassified from AOCL into earnings over the next twelve months			19
Derivative, Notional Amount	$ 721	$ 0	$ 721	$ 0		$ 0
Net Investment Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount | €					€ 450