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Derivative and Other Financial Instruments - Narrative (Details) € in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 EUR (€)	Dec. 31, 2020 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Objective for using derivative instruments				The Company’s objective in managing exposure to market and interest rate risk is to limit the impact on earnings and cash flow.
Loss expected to be reclassified to earnings				$ 56,000,000
Loss, net of tax, expected to be reclassified to earnings				46,000,000
Reclassification of anticipated transactions that were no longer considered probable				0	$ 0
Derivatives designated as net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Carrying amount of hedged net investment	$ 1,403,000,000			1,403,000,000		€ 1,625
Derivatives designated as net investment hedges | Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Loss on net investment hedge settlements		$ 33,000,000		48,000,000
Loss on net investment hedge settlements, net of tax		$ 10,000,000		71,000,000
Derivatives designated as net investment hedges | Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Loss on net investment hedge settlements	40,000,000		$ 61,000,000	81,000,000	61,000,000
Loss on net investment hedge settlements, net of tax	40,000,000		61,000,000	81,000,000	61,000,000
Designated as Hedging Instrument | Derivatives in fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Cumulative amount of fair value hedging adjustment included in the carrying about of the hedged assets	3,000,000			3,000,000			$ 4,000,000
Designated as Hedging Instrument | Derivatives in fair value hedges | Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Losses from foreign exchange contracts designated as fair value hedges (less than)	$ 7,000,000		$ 3,000,000	$ 1,000,000	$ 26,000,000
Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, remaining maturity range				1 year
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, remaining maturity range				20 months

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- Definition

Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months Net Of Tax

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Gain (Loss) on Derivative Used in Net Investment Hedge, Pretax

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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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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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The amount of net gain (loss) reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

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Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective.

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Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk.

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Description of the reasons for holding or issuing derivative instruments and nonderivative hedging instruments. Includes discussion of the objectives for holding or issuing derivative instruments, the context needed to understand those objectives, and the strategies for achieving those objectives. The description generally distinguishes between derivative and nonderivative instruments by the types of hedging relationships and between those instruments used for risk management purposes and those used for other purposes. Information about those instruments is disclosed in the context of each instrument's primary underlying risk exposure (for example, interest rate, credit, foreign exchange rate, interest rate and foreign exchange rate, or overall price).

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