Capital contribution to private equity funds.

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Number Of Investments

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Year in which contingent commitments to qualified affordable housing project investments are expected to be paid, in YYYY format.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates.

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Amount of commitment or contingent commitments to qualified affordable housing project investments.

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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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No definition available.

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Variable Interest Entities - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) investment	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) investment	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Variable Interest Entity
Assets	$ 205,463		$ 205,463		$ 211,116
LLCs designed for the purpose of purchasing pools of residual interests in leases
Variable Interest Entity
Number of co-investments \| investment	3		3
Ownership percentage (more than)	50.00%		50.00%
Variable Interest Entity, Not Primary Beneficiary \| Loans provided to VIEs
Variable Interest Entity
Unfunded commitment amounts			$ 1,900		1,500
Variable Interest Entity, Not Primary Beneficiary \| CDC investments
Variable Interest Entity
Assets	$ 1,759		1,759		1,705
Variable Interest Entity, Not Primary Beneficiary \| CDC investments \| Qualified Affordable Housing Tax Credits
Variable Interest Entity
Assets	1,500		1,500		1,400
Unfunded commitments in qualifying LIHTC investments	607		$ 607		573
Variable Interest Entity, Not Primary Beneficiary \| CDC investments \| Qualified Affordable Housing Tax Credits \| Lower limit
Variable Interest Entity
Unfunded commitments, year expected to be funded			2022
Variable Interest Entity, Not Primary Beneficiary \| CDC investments \| Qualified Affordable Housing Tax Credits \| Upper limit
Variable Interest Entity
Unfunded commitments, year expected to be funded			2039
Variable Interest Entity, Not Primary Beneficiary \| Private equity investments
Variable Interest Entity
Assets	177		$ 177		133
Unfunded commitment amounts			163		$ 124
Capital contribution to private equity investments	$ 7	$ 4	$ 28	$ 12