INTANGIBLE FRANCHISE RIGHTS AND GOODWILL - Roll-Forward of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill
Balance	$ 1,651.9	$ 1,661.8
Additions through acquisitions	449.4	49.7
Purchase price allocation adjustments	0.0	11.0
Disposals	(66.5)	(52.9)
Reclassified from (to) assets held for sale, net	28.3	(23.6)
Currency translation	(5.2)	6.0
Balance	2,057.9	1,651.9	$ 1,661.8
U.S.
Goodwill
Balance	1,532.1	1,549.9
Additions through acquisitions	288.3	49.7	236.1
Purchase price allocation adjustments	0.0	9.1
Disposals	(66.4)	(52.9)
Reclassified from (to) assets held for sale, net	28.3	(23.6)
Currency translation	0.0	0.0
Balance	1,782.2	1,532.1	1,549.9
Accumulated impairment	40.6
U.K.
Goodwill
Balance	119.8	111.9
Additions through acquisitions	161.1	0.0
Purchase price allocation adjustments	0.0	1.9
Disposals	(0.1)	0.0
Reclassified from (to) assets held for sale, net	0.0	0.0
Currency translation	(5.2)	6.0
Balance	$ 275.7	$ 119.8	$ 111.9

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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