v3.26.1
FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale, fair value $ 1,068 $ 885
Loans held for investment, fair value 166 167
Long-term debt 1,434 1,161
Long-term debt, aggregate unpaid principal 1,433 1,151
Difference (1) (10)
Loans held for sale    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale, fair value 1,068 885
Loans held for sale, aggregate unpaid principal 1,046 855
Difference 22 30
Loans held for investment    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for investment, fair value 166 167
Loans held for investment, aggregate unpaid principal 177 179
Difference (11) (12)
90 or  more days | Loans held for sale    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale, fair value 0 0
Loans held for sale, aggregate unpaid principal 0 0
Difference 0 0
90 or  more days | Loans held for investment    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for investment, fair value 5 3
Loans held for investment, aggregate unpaid principal 6 4
Difference $ (1) $ (1)