Derivatives - Summary of Effect of Cash Flow and Fair Value Hedge Accounting on Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Cash Flow Hedges [Member] \| Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, cash flow hedges	$ 17	$ 8	$ 8	$ 28
Amount of gain (loss) reclassified from AOCI into income	$ 4		$ 8
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest expense, net	Interest expense, net	Interest expense, net	Interest expense, net
Cash Flow Hedges [Member] \| Cross Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, cash flow hedges	$ (4)	$ 13	$ (5)	$ 15
Amount of gain (loss) reclassified from AOCI into income	$ 1
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment income and other, net	Investment income and other, net	Investment income and other, net	Investment income and other, net
Fair Value Hedges [Member] \| Cross Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, fair value hedges	$ 4	$ 8	$ 4	$ (4)
Amount of gain (loss) reclassified from AOCI into income	$ (14)	$ 37	$ (22)	$ 43
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment income and other, net	Investment income and other, net	Investment income and other, net	Investment income and other, net
Net Investment Hedges [Member] \| Cross Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, net investment hedging	$ (2)	$ 3	$ (1)	$ 2
Amount of gain (loss) reclassified from AOCI into income	$ (1)	$ 6	$ (2)	$ 9
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment income and other, net	Investment income and other, net	Investment income and other, net	Investment income and other, net

Indicates line item in statement of income or comprehensive income that includes gain (loss) from effective portion of derivative instrument reclassified from accumulated other comprehensive income (AOCI) into income.

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-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4D

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
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Amount, before tax, after reclassification adjustment, of gain (loss) from increase (decrease) in instrument-specific credit risk of financial liability measured under fair value option.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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