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SEGMENT INFORMATION - Goodwill and Intangible Franchise Rights and Total Assets by Reportable Segment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information
Total assets	$ 5,749.4	$ 5,089.4
Continuing Operations
Segment Reporting Information
Property and equipment, net	1,957.8	1,584.4
Total assets	5,736.4	5,062.9
U.S. | Continuing Operations
Segment Reporting Information
Property and equipment, net	1,649.9	1,303.1
Total assets	4,773.1	3,946.2
U.K. | Continuing Operations
Segment Reporting Information
Property and equipment, net	308.0	281.3
Total assets	$ 963.3	$ 1,116.8

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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