ALLOWANCE FOR RISK-SHARING OBLIGATIONS AND GUARANTY OBLIGATION - CECL Provision Impact (Details) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Jun. 30, 2025
USD ($)
|
Mar. 31, 2025
USD ($)
|
Jun. 30, 2024
USD ($)
|
Mar. 31, 2024
USD ($)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2024
USD ($)
|
|
| Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | ||||||
| Forecast-period loss rate | 0.021 | 0.021 | 0.023 | 0.023 | ||
| Reversion-period loss rate | 0.012 | 0.012 | 0.013 | 0.013 | ||
| Historical loss rate | 0.003 | 0.003 | 0.003 | 0.003 | ||
| CECL allowance | $ 24.6 | $ 24.4 | $ 24.9 | $ 25.0 | ||
| Provision (benefit) for CECL allowance | 0.2 | 0.2 | (0.1) | (6.6) | $ 0.4 | $ (6.7) |
| Fannie Mae DUS Program | ||||||
| Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | ||||||
| At-risk Fannie Mae servicing portfolio UPB | $ 64,700.0 | $ 63,600.0 | $ 59,500.0 | $ 59,200.0 | ||