Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Securities borrowed	$ 22,300	$ 18,330
Derivative instruments, net	4,108	5,804
Bank-owned life insurance	3,554	3,479
Investments in joint ventures and other unconsolidated entities	3,162	3,095
Collateral, net	1,011	2,616
Prepaid expenses	612	383
Right-of-use assets	542	720
Income taxes receivable	317	367
Deferred tax assets, net of valuation allowance	254	233
Accounts receivable	236	379
Receivable for securities settlement	213	117
Deposits with clearing organizations	62	58
Other	1,244	929
Total	37,615	36,510
Advances to affiliate	$ 544	$ 460