Noninterest Revenue and Noninterest Expense - Principal Transactions (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Principal transactions revenue
Total trading revenue	$ 5,990	$ 6,216	$ 19,571	$ 20,750
Private equity gains/(losses)	(2)	(6)	21	(15)
Principal transactions	5,988	6,210	19,592	20,735
Interest rate
Principal transactions revenue
Total trading revenue	711	1,383	2,717	4,950
Credit
Principal transactions revenue
Total trading revenue	319	487	1,457	1,540
Foreign exchange
Principal transactions revenue
Total trading revenue	1,259	1,219	3,872	4,205
Equity
Principal transactions revenue
Total trading revenue	3,342	2,677	10,720	8,311
Commodity
Principal transactions revenue
Total trading revenue	$ 359	$ 450	$ 805	$ 1,744

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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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
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