Derivative Instruments - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 35	$ 38
Derivative, Collateral, Right to Reclaim Cash	23	6
Collateral Already Posted, Aggregate Fair Value	50	54
Variable Interest Entity, Primary Beneficiary [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,662	1,573
Variable Interest Entity, Primary Beneficiary [Member] \| Interest Rate Swap One [Member]
Derivative [Line Items]
Derivative, Notional Amount	864	887
Variable Interest Entity, Primary Beneficiary [Member] \| Currency Swaps [Member]
Derivative [Line Items]
Derivative, Notional Amount	149	176
AFS [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	167	337
AFS [Member] \| Interest Rate Swap One [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 141	$ 989

The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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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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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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