The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Nominal or face amount used to calculate payment on derivative.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Derivative Instruments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Net interest income (expense)	$ (31)	$ (35)	$ (94)	$ (109)
Fair Value Hedging \| Not Designated as Hedging Instrument \| Foreign exchange forward contracts
Derivative [Line Items]
Aggregate notional value	336		336		$ 460
Net gain (loss)	(6)	5	(10)	1
Fair Value Hedging \| Not Designated as Hedging Instrument \| Foreign exchange forward contracts \| Other current liabilities
Derivative [Line Items]
Aggregate notional value	6		6		2
Net Investment Hedges \| Designated as Hedging Instrument \| Cross currency swaps
Derivative [Line Items]
Aggregate notional value	1,000		1,000		1,000
Net interest income (expense)	5	$ 3	14	$ 7
Cash Flow Hedges \| Designated as Hedging Instrument \| Foreign exchange forward contracts
Derivative [Line Items]
Aggregate notional value	520		$ 520		$ 489
Maturity of derivatives			24 months
Net losses related to cash flow hedges expected to be reclassified into earnings in the next twelve months			$ 8
Cash Flow Hedges \| Designated as Hedging Instrument \| Interest rate swap contracts
Derivative [Line Items]
Aggregate notional value	$ 2,300		$ 2,300