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Financial Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Total derivatives	$ 118		$ 118		$ 38
Derivatives Designated as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Total derivatives	106		106		37
Foreign currency forward-exchange contracts \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Total derivatives	12		12		1
Foreign currency forward-exchange contracts	(20)	$ (6)	(26)	$ (11)
Foreign currency forward-exchange contracts \| Derivatives Not Designated as Hedging Instruments \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	29		29		16
Foreign currency forward-exchange contracts \| Derivatives Not Designated as Hedging Instruments \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	(17)		(17)		(15)
Forward-starting interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	66		66		0
Forward-starting interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1		1		0
Forward-starting interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative assets	9		9		17
Forward-starting interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0		0		5
Cross-currency interest rate swap contracts \| Derivatives Designated as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Collateral received	43		43
Collateral posted	14		14		23
Cross-currency interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	34		34		12
Cross-currency interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0		0		3
Cross-currency interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative assets	21		21		14
Cross-currency interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1		1		0
Fixed-to-floating interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative assets	0		0		2
Fixed-to-floating interest rate swap contracts \| Derivatives Designated as Hedging Instruments: \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative assets	$ (22)		$ (22)		$ 0