GOODWILL AND INTANGIBLE ASSETS - Components of Intangible Assets (Details) - USD ($) $ in Millions |
Mar. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | $ 1,175.9 | $ 1,183.7 |
| Accumulated Amortization | (468.0) | (455.6) |
| Net Carrying Amount | 707.9 | 728.1 |
| Customer relationships | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 1,135.7 | 1,143.5 |
| Accumulated Amortization | (431.5) | (420.1) |
| Net Carrying Amount | 704.2 | 723.4 |
| Technology | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 27.7 | 27.7 |
| Accumulated Amortization | (25.2) | (24.5) |
| Net Carrying Amount | 2.5 | 3.2 |
| Other | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 12.5 | 12.5 |
| Accumulated Amortization | (11.3) | (11.0) |
| Net Carrying Amount | $ 1.2 | $ 1.5 |