Other Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Other Assets [Abstract]
Securities borrowed	$ 23,131	$ 16,489
Derivative instruments, net	5,307	7,664
Bank-owned life insurance	3,742	3,649
Collateral, net	2,983	1,833
Investments in joint ventures and other unconsolidated entities	2,981	3,245
Receivable for securities settlement	1,082	383
Deferred tax assets, net of valuation allowance	1,034	1,127
Right-of-use assets	805	500
Accounts receivable	611	404
Prepaid expenses	598	558
Income taxes receivable	246	235
Deposits with clearing organizations	58	62
Other	2,228	1,753
Total	44,806	37,902
Equity securities without readily determinable fair value, amount	183	179
Upward price adjustment, annual amount	5
Advances to affiliate	$ 1,150	$ 1,200
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Total	Total