Loans, Lending Commitments and Related Allowance for Credit Losses - Nonaccrual Loans Held for Investment before Allowance (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	$ 893	$ 591
Nonaccrual loans without an ACL	356	90
Corporate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	34	164
Secured lending facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	375	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	195	152
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	138	97
Securities-based lending and Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	$ 151	$ 178