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Derivative Instruments - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 93	$ 113
Derivative, Collateral, Right to Reclaim Cash	13	1
Collateral Already Posted, Aggregate Fair Value	109	130
Variable Interest Entity, Primary Beneficiary [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,221	1,233
Variable Interest Entity, Primary Beneficiary [Member] | Interest Rate Swap One [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,069	1,151
Variable Interest Entity, Primary Beneficiary [Member] | Currency Swaps [Member]
Derivative [Line Items]
Derivative, Notional Amount	272	308
AFS [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	185	195
AFS [Member] | Interest Rate Swap One [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 1,275	$ 726

X

- Definition

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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-Subparagraph (d)
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
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-Name Accounting Standards Codification
-Topic 210
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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.

+ References

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-Publisher FASB
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-Section 50
-Paragraph 4H
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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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-Publisher FASB
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-SubTopic 10
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