Variable Interest Entities (VIE) - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets not available for use	$ 407,350	$ 402,392
Liabilities with no recourse	114,506	119,013
Noncontrolling interest	3,200	3,400
Redeemable noncontrolling interest	1,000	1,100
Maximum exposure	6,900	5,700
Unconsolidated VIE, carrying value	5,300	4,000
Nonrecourse \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Liabilities with no recourse	2,200	2,500
Asset Pledged as Collateral \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Assets not available for use	$ 4,100	$ 4,900

Redeemable Noncontrolling Interest In Variable Interest Entity

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Unconsolidated Variable Interest Entity, Carrying Value

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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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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest).

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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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