Financial Instruments Cash Flow Hedges Included in AOCI (Details) € in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 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	$ (16)	$ (3)	$ 2	$ (26)
Additions and revaluations of derivatives designated as cash flow hedges	10	(1)	(34)	11
Clearance of hedge results to earnings	(2)	1	24	12
Ending Balance	(8)	(3)	(8)	(3)
After-tax net (loss) gain to be reclassified from AOCL into earnings over the next twelve months			(9)
Derivative, Notional Amount	51	73	$ 51	73		$ 570
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity			2 years
Beginning Balance	19		$ 0
Additions and revaluations of derivatives designated as cash flow hedges	4		23
Clearance of hedge results to earnings	(17)		(17)
Ending Balance	6		6
After-tax net (loss) gain to be reclassified from AOCL into earnings over the next twelve months			6
Derivative, Notional Amount	$ 770	$ 0	$ 770	$ 0		$ 0
Net Investment Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount | €					€ 450