v3.25.4
Fair Value Measurement - Schedule of Differences Between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding - Fair Value Option (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance $ 236 $ 624
Fair Value 241 630
Fair Value Over / (Under) UPB 5 6
Non-accrual loans:    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 6 4
Fair Value 7 4
Fair Value Over / (Under) UPB 1 0
Accrual loans:    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 230 620
Fair Value 234 626
Fair Value Over / (Under) UPB 4 6
Loans held for sale    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 236 557
Fair Value 241 564
Fair Value Over / (Under) UPB 5 7
Loans held for sale | Non-accrual loans:    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 6 4
Fair Value 7 4
Fair Value Over / (Under) UPB 1 0
Loans held for sale | Accrual loans:    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 230 553
Fair Value 234 560
Fair Value Over / (Under) UPB 4 7
Loans held-for-investment    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 0 67
Fair Value 0 66
Fair Value Over / (Under) UPB 0 (1)
Loans held-for-investment | Accrual loans:    
Fair Value, Option, Quantitative Disclosures    
Unpaid Principal Balance 0 67
Fair Value 0 66
Fair Value Over / (Under) UPB $ 0 $ (1)