v3.26.1
FAIR VALUES OF ASSETS AND LIABILITIES - Non-Recurring Basis (Details) - Nonrecurring Basis - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Total Gains/(Losses)          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Collateral-dependent loans, gains (losses) $ (51) $ (20) $ (88) $ (43)  
Level 3 | Fair Value          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Collateral-dependent loans $ 143   $ 143   $ 74