EXECUTIVE SEPARATION AND MERGER-RELATED ITEMS - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Unusual or Infrequent Item, or Both [Line Items] | ||||
| Cash severance and share-based compensation expense | $ 6.7 | $ 25.0 | $ 29.8 | $ 31.8 |
| Executive separation | ||||
| Unusual or Infrequent Item, or Both [Line Items] | ||||
| Cash severance and share-based compensation expense | 0.0 | $ 18.8 | 7.0 | $ 18.8 |
| Board of Directors Chairman | Executive separation | ||||
| Unusual or Infrequent Item, or Both [Line Items] | ||||
| Cash severance and share-based compensation expense | $ 0.0 | $ 7.0 | ||