Financial Instruments Fair Value of Derivatives (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		$ 126	$ 25	$ 74
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(75)	(18)	(6)
Derivative Asset, Net		51	7	68
Derivative Liability, Gross		97	43	20
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(69)	(16)	7
Derivative Liability, Net		28	27	27
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		24
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	0
Derivative Asset, Net		24
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		12
Derivative Asset, Counterparty and Cash Collateral Netting		0
Derivative Asset, Net		12
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		101	25	74
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(75)	(18)	(6)
Derivative Asset, Net		26	7	68
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		84	43	20
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(69)	(16)	7
Derivative Liability, Net		15	$ 27	$ 27
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, Counterparty and Cash Collateral Netting	[1]	0
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, Counterparty and Cash Collateral Netting	[1]	0
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.