Trading Assets and Liabilities - Summary of Market Making Revenues by Major Product Type (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Trading activity, gains and losses, net [Line Items]
Market making	$ 5,461	$ 5,723
Interest rates
Trading activity, gains and losses, net [Line Items]
Market making	(2,505)	4,410
Credit
Trading activity, gains and losses, net [Line Items]
Market making	782	118
Currencies
Trading activity, gains and losses, net [Line Items]
Market making	1,923	(2,472)
Equities
Trading activity, gains and losses, net [Line Items]
Market making	3,788	2,942
Commodities
Trading activity, gains and losses, net [Line Items]
Market making	$ 1,473	$ 725

- Definition

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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