Financial Instruments Fair Value of Derivatives (Details) - USD ($) $ in Millions		Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		$ 57	$ 55	$ 126
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(23)	(40)	(75)
Derivative Asset, Net		34	15	51
Derivative Liability, Gross		40	135	97
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(23)	(40)	(69)
Derivative Liability, Net		17	95	28
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		20	15	24
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	0	0	0
Derivative Asset, Net		20	15	24
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Gross		9	38	12
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	0	0
Derivative Liability, Net		9	38	12
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		37	40	101
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(23)	(40)	(75)
Derivative Asset, Net		14	0	26
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Gross		31	97	84
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(23)	(40)	(69)
Derivative Liability, Net		$ 8	$ 57	15
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross				1
Derivative Asset, Net				1
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Gross				1
Derivative Liability, Net				$ 1

[1] Counterparty and cash collateral amounts represent the estimated net settlement amount when applying netting and set-off rights included in master netting arrangements between the company and its counterparties and the payable or receivable for cash collateral held or placed with the same counterparty.