v3.25.2
Fair Value Accounting - Unobservable Inputs (Details)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets acquired through foreclosure $ 218,000,000 $ 52,000,000
Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI 300,000,000 561,000,000
Other assets acquired through foreclosure 218,000,000 52,000,000
Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI 300,000,000 561,000,000
Other assets acquired through foreclosure $ 218,000,000 $ 52,000,000
Minimum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Collateral Method    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 6.00% 6.00%
Minimum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Other Assets | Valuation Technique, Collateral Method    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets acquired through foreclosure, measurement input 1.00% 1.00%
Minimum | Discount rate | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 3.00% 3.00%
Minimum | Scheduled cash collections | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 0.00% 0.00%
Minimum | Proceeds from non-real estate collateral | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 0.00% 0.00%
Minimum | Option Adjusted Spread    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.0141 0.0021
Minimum | Conditional Prepayment Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.099 0.084
Minimum | Recapture Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.200 0.200
Minimum | Servicing Fee Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.00250 0.00250
Minimum | Cost to Service    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 77 75
Minimum | Lifetime liquidation probability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFS, measurement input 0.012  
Minimum | Servicing Fee Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative asset, measurement input 4.2 4.3
Minimum | Pull-through Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative asset, measurement input 0.75 0.76
Maximum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Collateral Method    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 10.00% 10.00%
Maximum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Other Assets | Valuation Technique, Collateral Method    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets acquired through foreclosure, measurement input 6.00% 6.00%
Maximum | Discount rate | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 8.00% 8.00%
Maximum | Scheduled cash collections | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 20.00% 20.00%
Maximum | Proceeds from non-real estate collateral | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFI, measurement input 70.00% 70.00%
Maximum | Option Adjusted Spread    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.0233 0.0315
Maximum | Conditional Prepayment Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.209 0.190
Maximum | Recapture Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.200 0.200
Maximum | Servicing Fee Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.00565 0.00565
Maximum | Cost to Service    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 83 95
Maximum | Lifetime liquidation probability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFS, measurement input 0.107  
Maximum | Servicing Fee Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative asset, measurement input 6.2 6.4
Maximum | Pull-through Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative asset, measurement input 1 1
Weighted Average | Option Adjusted Spread    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.0212 0.0237
Weighted Average | Conditional Prepayment Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.160 0.140
Weighted Average | Recapture Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.200 0.200
Weighted Average | Servicing Fee Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.00353 0.00364
Weighted Average | Cost to Service    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 80 82
Weighted Average | Lifetime liquidation probability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans HFS, measurement input 0.050  
Weighted Average | Servicing Fee Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative asset, measurement input 5.2 5.3
Weighted Average | Pull-through Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative asset, measurement input 0.89 0.92