v3.26.1
FAIR VALUE (Schedule of Assets and Liabilities Measured at Fair Value by Class on a Recurring Basis Using Level 3 Inputs) (Details) - Level 3 - Fair Value, Recurring - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Private equity investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of assets, beginning balance $ 157 $ 105
Unrealized securities gains, net 0 4
Other noninterest income 0 0
Purchases 2 1
Cost of investments sold 0 (1)
Transfers out 0 0
Fair value of assets, ending balance 159 109
Ag loan servicing    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of assets, beginning balance 18 20
Unrealized securities gains, net 0 0
Other noninterest income 2 (1)
Purchases 0 0
Cost of investments sold 0 0
Transfers out 0 0
Fair value of assets, ending balance $ 20 $ 19