Other Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Other Assets [Abstract]
Securities borrowed	$ 24,108	$ 22,300
Derivative instruments, net	6,786	4,108
Bank-owned life insurance	3,577	3,554
Investments in joint ventures and other unconsolidated entities	3,236	3,162
Collateral, net	1,475	1,011
Receivable for securities settlement	895	213
Deferred tax assets, net of valuation allowance	775	254
Prepaid expenses	737	612
Accounts receivable	590	236
Right-of-use assets	546	542
Income taxes receivable	295	317
Deposits with clearing organizations	62	62
Other	1,118	1,244
Total	44,200	37,615
Equity securities without readily determinable fair value, amount	163	109
Equity securities without readily determinable fair value, upward price adjustment	55
Advances	$ 587	$ 544