v3.25.2
LOAN SERVICING - Schedule of Activity in MSR (Details) - Mortgage Servicing Rights - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Servicing Assets at Fair Value [Line Items]          
Mortgage loans sold with servicing retained $ 6,730.0   $ 6,730.0   $ 6,429.0
Mortgage loans sold with servicing retained 323.0 $ 306.0 635.0 $ 622.0  
Pre-tax net gains (losses) resulting from above loan sales 5.0 5.0 9.0 11.0  
Mortgage servicing fees 4.0 3.0 8.0 7.0  
Servicing Asset at Amortized Cost, Balance [Roll Forward]          
Balance at beginning of period 72.6 62.5 70.5 59.5  
Additions 2.5 3.9 6.0 7.8  
Payoffs and curtailments (1.3) (0.8) (2.1) (1.3)  
Impairment (charge) / recovery 0.1 0.0 0.0 0.2  
Amortization / other (1.7) (0.5) (2.2) (1.1)  
Balance at end of period 72.2 65.1 72.2 65.1  
Fair value, beginning of period 84.8 75.2 86.3 71.8  
Fair value, end of period $ 85.5 $ 78.0 $ 85.5 $ 78.0