v3.25.4
Loans, Lending Commitments and Related Allowance for Credit Losses - Modified Loans Held for Investment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 1,203 $ 646
Percent of total loans 0.40% 0.30%
Term Extension    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 1,087 $ 562
Percent of total loans 0.40% 0.40%
Other-than-insignificant Payment Delay    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 34 $ 0
Percent of total loans 0.00% 0.00%
Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 1 $ 2
Percent of total loans 0.00% 0.00%
Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 81 $ 82
Percent of total loans 0.10% 0.10%
Corporate | Term Extension    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 230 $ 211
Percent of total loans 3.20% 3.10%
Corporate | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 27 months 15 months
Corporate | Other-than-insignificant Payment Delay    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 10 $ 0
Percent of total loans 0.10% 0.00%
Corporate | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 8 months 0 months
Corporate | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 0 $ 0
Corporate | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Percent of total loans 0.00% 0.00%
Secured lending facilities | Single Modifications    
Financing Receivable, Modified [Line Items]    
Percent of total loans 0.00% 0.00%
Secured lending facilities | Term Extension    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 9 $ 41
Percent of total loans 0.00% 0.10%
Secured lending facilities | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 30 months 2 months
Secured lending facilities | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification   0 months
Secured lending facilities | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 0 $ 0
Commercial real estate | Term Extension    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 398 $ 172
Percent of total loans 5.00% 2.00%
Commercial real estate | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 36 months 11 months
Commercial real estate | Term Extension | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 64 months 61 months
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 | Other-than-insignificant Payment Delay | Multiple Modifications - Term Extension and Interest Rate Reduction    
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]    
Amortized Cost $ 0 $ 0
Commercial real estate | Principal Forgiveness | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 0 $ 0
Commercial real estate | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Percent of total loans 0.00% 0.00%
Commercial real estate | Interest Rate Reduction | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Percent of total loans 0.60% 1.60%
Commercial real estate | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 74 $ 81
Percent of total loans 0.90% 1.00%
Residential real estate | Term Extension    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 1 $ 0
Percent of total loans 0.00% 0.00%
Residential real estate | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 29 months 0 months
Residential real estate | Term Extension | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 120 months 84 months
Residential real estate | Other-than-insignificant Payment Delay    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 1 $ 0
Percent of total loans 0.00% 0.00%
Residential real estate | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 19 months 0 months
Residential real estate | Other-than-insignificant Payment Delay | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification   0 months
Residential real estate | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 0 $ 0
Residential real estate | Principal Forgiveness | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost 0 0
Residential real estate | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 1 $ 2
Percent of total loans 0.00% 0.00%
Residential real estate | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Percent of total loans 0.30% 1.00%
Residential real estate | Interest Rate Reduction | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Percent of total loans 1.00% 1.00%
Residential real estate | Multiple Modifications - Term Extension and Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 7 $ 1
Percent of total loans 0.00% 0.00%
Securities-based lending and Other loans | Single Modifications    
Financing Receivable, Modified [Line Items]    
Percent of total loans 0.00%  
Securities-based lending and Other loans | Term Extension    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 449 $ 138
Percent of total loans 0.40% 0.10%
Securities-based lending and Other loans | Term Extension | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 23 months 21 months
Securities-based lending and Other loans | Other-than-insignificant Payment Delay    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 23 $ 0
Percent of total loans 0.00% 0.00%
Securities-based lending and Other loans | Other-than-insignificant Payment Delay | Single Modifications    
Financing Receivable, Modified [Line Items]    
Weighted average term increase from modification 12 months 0 months
Securities-based lending and Other loans | Principal Forgiveness | Single Modifications    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 0 $ 0
Securities-based lending and Other loans | Interest Rate Reduction | Single Modifications    
Financing Receivable, Modified [Line Items]    
Percent of total loans   0.00%
Commitments to Extend Credit    
Financing Receivable, Modified [Line Items]    
Amortized Cost $ 681 $ 746