v3.26.3
GOODWILL AND CORE DEPOSIT INTANGIBLES - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - Core Deposits - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Intangible Asset, Finite-Lived, Acquired [Line Items]    
Remainder 2026 $ 22  
2027 80  
2028 70  
2029 61  
2030 53  
2031 37  
Thereafter 26  
Balance, net of accumulated amortization $ 349 $ 195