FAIR VALUE MEASUREMENTS - UNREALIZED GAIN OR LOSS ON INVESTMENTS (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Fair Value Disclosures [Abstract] | ||||
| Net unrealized gains included in earnings related to investments held at end of period | $ 1.5 | $ 3.6 | $ 5.2 | $ 6.4 |