Loans, Lending Commitments and Related Allowance for Credit Losses - Loans by Interest Rate Type (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	$ 42,141	$ 32,863
Floating or Adjustable Rate	146,647	118,569
Corporate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	0	0
Floating or Adjustable Rate	13,674	14,626
Secured lending facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	0	196
Floating or Adjustable Rate	35,350	28,827
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	343	574
Floating or Adjustable Rate	8,661	7,594
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	18,966	13,120
Floating or Adjustable Rate	25,292	22,196
Securities-based lending and Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed Rate	22,832	18,973
Floating or Adjustable Rate	$ 63,670	$ 45,326