Noninterest Revenue and Noninterest Expense - Principal Transactions (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Principal transactions revenue
Total trading revenue	$ 6,216	$ 5,408	$ 20,750	$ 15,542
Private equity losses	(6)	(25)	(15)	(64)
Principal transactions	6,210	5,383	20,735	15,478
Interest rate
Principal transactions revenue
Total trading revenue	1,383	1,092	4,950	1,937
Credit
Principal transactions revenue
Total trading revenue	487	488	1,540	1,224
Foreign exchange
Principal transactions revenue
Total trading revenue	1,219	1,398	4,205	4,147
Equity
Principal transactions revenue
Total trading revenue	2,677	1,868	8,311	6,426
Commodity
Principal transactions revenue
Total trading revenue	$ 450	$ 562	$ 1,744	$ 1,808

Amount of realized and unrealized gain (loss), from the firm's direct investment activity, conducted separately from customer trading activities, and includes, but is not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.

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Amount of gain (loss) resulting from the difference between the acquisition price and the selling price or fair value of trading assets and trading liabilities, conducted separately from customer trading activities. Includes, but is not limited to, changes in fair value of trading assets and trading liabilities.

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