Fair Value Option - Net Revenues from Liabilities under the Fair Value Option (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Borrowings
Fair Value Option Quantitative Disclosures
Net revenues	$ 2,207	$ (1,988)
Deposits
Fair Value Option Quantitative Disclosures
Net revenues	0	(90)
Trading Revenues \| Borrowings
Fair Value Option Quantitative Disclosures
Net revenues	2,545	(1,788)
Trading Revenues \| Deposits
Fair Value Option Quantitative Disclosures
Net revenues	61	(37)
Interest Expense \| Borrowings
Fair Value Option Quantitative Disclosures
Net revenues	338	200
Interest Expense \| Deposits
Fair Value Option Quantitative Disclosures
Net revenues	$ 61	$ 53

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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