v3.26.1
FAIR VALUE - Schedule of Fair Value Option (Details) - Residential Mortgate Loans Held-for-Sale - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale $ 113 $ 109
Unpaid Principal Balance 114 109
Difference $ (1) $ 0