v3.26.1
ALLOWANCE FOR RISK-SHARING OBLIGATIONS - CECL Provision Impact (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
ALLOWANCE FOR RISK-SHARING OBLIGATIONS            
Forecast-period loss rate 0.021 0.021 0.021 0.021    
Reversion-period loss rate 0.012 0.012 0.012 0.012    
Historical loss rate 0.003 0.003 0.003 0.003    
At-risk Fannie Mae servicing portfolio UPB $ 69,500.0 $ 68,900.0 $ 64,700.0 $ 63,600.0    
CECL allowance $ 25.4 25.4 24.6 24.4    
Provision (benefit) for CECL allowance   $ 0.4 $ 0.2 $ 0.2 $ 0.4 $ 0.4