Other Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Other Assets [Abstract]
Securities borrowed	$ 21,627	$ 16,489
Derivative instruments, net	4,661	7,664
Bank-owned life insurance	3,674	3,649
Collateral, net	3,087	1,833
Investments in joint ventures and other unconsolidated entities	3,025	3,245
Deferred tax assets, net of valuation allowance	989	1,127
Prepaid expenses	679	558
Receivable for securities settlement	536	383
Right-of-use assets	478	500
Accounts receivable	446	404
Income taxes receivable	273	235
Deposits with clearing organizations	62	62
Other	1,218	1,753
Total	40,755	37,902
Equity securities without readily determinable fair value, amount	176	179
Advances	505	$ 1,201
Gain on observable transaction	$ 19