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Collateralized Transactions - Concentration Based on the Firm's Total Assets (Details) - U.S. government and agency securities and other sovereign government obligations - Product Concentration Risk
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Trading assets    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Concentration risk (as a percent) 9.00% 9.00%
Off balance sheet—Collateral received    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Concentration risk (as a percent) 12.00% 12.00%