Financial Instruments (Fair Value of Derivative Instruments) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Total foreign currency forward-exchange contracts		$ (38)	$ 20
Unrecognized net gains/(losses) on derivative instruments	[1]	42	(58)	$ 12
Foreign Exchange Forward | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Total foreign currency forward-exchange contracts		(1)	6
Gain (loss) on derivative contracts not designated as hedging instruments		(20)	(2)
Foreign Exchange Forward | Derivatives Not Designated as Hedging Instruments | Other current assets
Derivatives, Fair Value [Line Items]
Foreign currency forward-exchange contracts		(16)	(10)
Foreign Exchange Forward | Derivatives Not Designated as Hedging Instruments | Other current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency forward-exchange contracts		(15)	(16)
Forward Starting Interest Rate Swap Contract [Member] | Derivatives Designated as Hedging Instruments | Other non-current assets
Derivatives, Fair Value [Line Items]
Total foreign currency forward-exchange contracts		(17)	(6)
Forward Starting Interest Rate Swap Contract [Member] | Derivatives Designated as Hedging Instruments | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency forward-exchange contracts		(5)	(17)
Cross-currency interest rate swap contracts | Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Unrecognized net gains/(losses) on derivative instruments		42	(58)
Gains/(losses) on derivative instruments		12	18
Collateral received		23
Cross-currency interest rate swap contracts | Derivatives Designated as Hedging Instruments | Other current assets
Derivatives, Fair Value [Line Items]
Total foreign currency forward-exchange contracts		(12)	(2)
Cross-currency interest rate swap contracts | Derivatives Designated as Hedging Instruments | Other current liabilities
Derivatives, Fair Value [Line Items]
Total foreign currency forward-exchange contracts		(3)	(21)
Cross-currency interest rate swap contracts | Derivatives Designated as Hedging Instruments | Other non-current assets
Derivatives, Fair Value [Line Items]
Foreign currency forward-exchange contracts		(14)	(5)
Fixed to Floating Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency forward-exchange contracts		2	11
Forward starting interest rate swap contracts | Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Foreign currency forward-exchange contracts		37	(14)
Unrecognized net gains/(losses) on derivative instruments		$ 18	$ (11)

[1] Presented net of reclassification adjustments and tax impacts, which are not significant in any period presented. Reclassification adjustments related to benefit plans are generally reclassified, as part of net periodic pension cost, into Cost of sales, Selling, general and administrative expenses, and/or Research and development expenses, as appropriate, in the Consolidated Statements of Income.