v3.26.1
Fair Value - Schedule of Fair Value Measurements - Reconciliation of Level 3 Assets And Liabilities (Details) - Fair value, measurements, recurring - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative liabilities, net of derivative assets    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of the period $ 0 $ 3
Net realized/unrealized losses (gains)    
Included in earnings 1 (1)
Included in OCI 0 0
Purchases and originations 0 0
Sales 0 0
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 2
Fair value at ending of the period 1 4
Fair Value, Liability, Recurring Basis, Still Held [Abstract]    
Included in earnings 1 0
Included in OCI 0 0
Hedged available-for-sale securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of the period 34 35
Net realized/unrealized gains    
Included in earnings 0 0
Included in OCI 0 0
Purchases and originations 0 0
Sales 0 0
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at ending of the period 34 35
Fair Value, Asset, Recurring Basis, Still Held [Abstract]    
Included in earnings 0 0
Included in OCI 0 0
Loans held-for-sale    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of the period 0 5
Net realized/unrealized gains    
Included in earnings 0 0
Included in OCI 0 0
Purchases and originations 0 8
Sales 0 (10)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at ending of the period 0 3
Fair Value, Asset, Recurring Basis, Still Held [Abstract]    
Included in earnings 0 0
Included in OCI $ 0 $ 0