Noninterest Revenue and Noninterest Expense - Principal Transactions (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Principal transactions revenue
Total trading revenue	$ 5,252	$ 6,397
Private equity gains/(losses)	(147)	103
Principal transactions	5,105	6,500
Interest rate
Principal transactions revenue
Total trading revenue	469	923
Credit
Principal transactions revenue
Total trading revenue	457	1,270
Foreign exchange
Principal transactions revenue
Total trading revenue	1,324	998
Equity
Principal transactions revenue
Total trading revenue	2,255	2,657
Commodity
Principal transactions revenue
Total trading revenue	$ 747	$ 549

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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