v3.26.1
Loans, Lending Commitments and Related Allowance for Credit Losses - Modified Loans Held for Investment (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 887 $ 214
Term Extension    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 30 $ 409
Interest Rate Reduction (%) 0.00% 0.20%
Other-than-insignificant Payment Delay    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 30
Interest Rate Reduction (%) 0.00% 0.00%
Corporate    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 30 $ 439
Interest Rate Reduction (%) 0.00% 0.30%
Corporate | Term Extension    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 13 $ 42
Interest Rate Reduction (%) 0.10% 0.50%
Corporate | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 29 months 37 months
Corporate | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 0 months 0 months
Corporate | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 0
Corporate | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Interest Rate Reduction (%) 0.00% 0.00%
Commercial real estate | Term Extension    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 292
Interest Rate Reduction (%) 0.00% 3.40%
Commercial real estate | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification   1 month
Commercial real estate | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification   0 months
Commercial real estate | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount   $ 0
Commercial real estate | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Interest Rate Reduction (%)   0.00%
Securities-based lending and Other | Term Extension    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 5 $ 34
Interest Rate Reduction (%) 0.00% 0.00%
Securities-based lending and Other | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 24 months 12 months
Securities-based lending and Other | Other-than-insignificant Payment Delay    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 30
Interest Rate Reduction (%) 0.00% 0.00%
Securities-based lending and Other | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 0 months 11 months
Securities-based lending and Other | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 0
Securities-based lending and Other | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Interest Rate Reduction (%) 0.00% 0.00%
Secured lending facilities | Term Extension    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 12 $ 41
Interest Rate Reduction (%) 0.00% 0.10%
Secured lending facilities | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 1 month 3 months
Secured lending facilities | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 0 months 0 months
Secured lending facilities | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 0
Secured lending facilities | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Interest Rate Reduction (%) 0.00% 0.00%