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FAIR VALUE MEASUREMENTS - Schedule of Additional Information about Assets Measured at Fair Value on Recurring Basis (Details) - Fair value, measurements, recurring - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period $ 54 $ 5
Purchases, issuances, sales and settlements:    
Issuances 7 1
Settlements (1) (5)
Transfers into Level 3 32 53
Balance at end of period 92 54
Loans Receivable    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period 53 0
Purchases, issuances, sales and settlements:    
Issuances 0 0
Settlements 0 0
Transfers into Level 3 32 53
Balance at end of period 85 53
Interest Rate Lock Commitments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period 1 5
Purchases, issuances, sales and settlements:    
Issuances 7 1
Settlements (1) (5)
Transfers into Level 3 0 0
Balance at end of period $ 7 $ 1