Loans, Lending Commitments and Related Allowance for Credit Losses - Loans by Interest Rate Type (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	$ 45,801	$ 42,141
Floating or Adjustable Rate	151,138	146,647
Corporate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	0	0
Floating or Adjustable Rate	13,174	13,674
Secured lending facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	0	0
Floating or Adjustable Rate	34,557	35,350
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	342	343
Floating or Adjustable Rate	9,920	8,661
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	20,754	18,966
Floating or Adjustable Rate	26,488	25,292
Securities-based lending and Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	24,705	22,832
Floating or Adjustable Rate	$ 66,999	$ 63,670