Variable Interest Entities and Securitization Activities - Assets Sold with Retained Exposure (Details) - Bilateral OTC - Equity - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Transfer of Financial Assets Accounted for as Sales
Gross cash proceeds from sale of assets	$ 98,694	$ 92,229
Fair value
Assets sold	100,308	92,580
Derivative assets recognized in the balance sheet	1,915	998
Derivative liabilities recognized in the balance sheet	$ 303	$ 648

Transfer Of Financial Assets, Assets Sold With Retained Exposure [Abstract]

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Amount of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction, at the date of derecognition.

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Fair value of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction.

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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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