INVESTMENTS - Schedule of Gross and Net Realized Gains and Losses (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Investments, Debt and Equity Securities [Abstract] | ||||
| Realized gains on investments | $ 0.0 | $ 0.0 | $ 0.1 | $ 0.0 |
| Realized losses on investments | 0.0 | 0.0 | 0.0 | 0.0 |
| Net realized gains on investments | $ 0.0 | $ 0.0 | $ 0.1 | $ 0.0 |