Financial Instruments Cash Flow Hedges Included in AOCI (Details) € in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 EUR (€)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Additions and revaluations of derivatives designated as cash flow hedges	[1]	$ (111)	$ 23	$ (24)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity		2 years
Beginning Balance		$ 0
Additions and revaluations of derivatives designated as cash flow hedges		(3)
Clearance of hedge results to earnings		(14)
Ending Balance		(17)	0
After-tax net loss to be reclassified from AOCL into earnings over the next twelve months		17
Derivative, Notional Amount		$ 1,164	0
Foreign Exchange Contract [Member] | Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount | €					€ 450
Commodity Contract [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity		2 years
Beginning Balance		$ 2	(26)	(2)
Additions and revaluations of derivatives designated as cash flow hedges		(44)	16	(19)
Clearance of hedge results to earnings		26	12	(5)
Ending Balance		(16)	2	$ (26)
After-tax net loss to be reclassified from AOCL into earnings over the next twelve months		14
Derivative, Notional Amount		$ 383	$ 570

[1] OCI is defined as other comprehensive income (loss).