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GOODWILL AND FRANCHISE VALUE - Schedule of Franchise Value (Details) - Franchise Rights - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Indefinite-lived Intangible Assets [Roll Forward] |  |
Balance as of beginning of period | $ 2,550.3 | $ 2,402.2
Additions through acquisitions | 218.0 | 172.5
Reductions through divestitures | (16.3) | (9.5)
Currency translation | 19.8 | (14.9)
Balance as of end of period | 2,771.8 | 2,550.3
2023 Acquisitions |  |
Indefinite-lived Intangible Assets [Roll Forward] |  |
Additions through acquisitions |  | $ 172.5
2024 Acquisitions |  |
Indefinite-lived Intangible Assets [Roll Forward] |  |
Additions through acquisitions | $ 218.0 |

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