v3.25.4
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
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Private equity investments      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance at beginning of year $ 105 $ 92 $ 81
Unrealized securities gains (losses), net 63 9 (2)
Other noninterest income 0 0 0
Purchases 15 11 14
Cost of investments sold (13) (7) (1)
Transfers out (13) 0 0
Balance at end of year 157 105 92
Ag loan servicing      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance at beginning of year 20 19 14
Unrealized securities gains (losses), net 0 0 0
Other noninterest income (2) 1 5
Purchases 0 0 0
Cost of investments sold 0 0 0
Transfers out 0 0 0
Balance at end of year $ 18 $ 20 $ 19