Financial Instruments Fair Value of Derivatives (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		$ 25	$ 72
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(18)	(35)
Derivative Asset, Net		7	37
Derivative Liability, Gross		43	21
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(16)	(15)
Derivative Liability, Net		27	6
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		25	72
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(18)	(35)
Derivative Asset, Net		7	37
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Gross		43	21
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(16)	(15)
Derivative Liability, Net		$ 27	$ 6

[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.