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Intangible Franchise Rights and Goodwill - Roll-Forward of Goodwill by Reportable Segment (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |  |
BALANCE |  | $ 1,008,300,000 | $ 963,900,000
Additions through acquisitions |  | 1,400,000 | 43,300,000
Disposals |  | (2,000,000.0) | (1,600,000)
Impairments | $ 0 | (10,700,000) |
Currency translation |  | 100,000 | 2,700,000
BALANCE | 997,100,000 | 997,100,000 | 1,008,300,000
Accumulated impairment | 97,800,000 | 97,800,000 |
U.S. |  |  |
Goodwill [Roll Forward] |  |  |
BALANCE |  | 902,300,000 | 861,600,000
Additions through acquisitions |  | 1,400,000 | 42,000,000.0
Disposals |  | (2,000,000.0) | (1,300,000)
Impairments |  | 0 |
Currency translation |  | 0 | 0
BALANCE | 901,700,000 | 901,700,000 | 902,300,000
Accumulated impairment | 40,600,000 | 40,600,000 |
U.K. |  |  |
Goodwill [Roll Forward] |  |  |
BALANCE |  | 92,100,000 | 87,600,000
Additions through acquisitions |  | 0 | 1,300,000
Disposals |  | 0 | 0
Impairments |  | 0 |
Currency translation |  | 3,200,000 | 3,200,000
BALANCE | 95,400,000 | 95,400,000 | 92,100,000
Brazil |  |  |
Goodwill [Roll Forward] |  |  |
BALANCE |  | 13,900,000 | 14,700,000
Additions through acquisitions |  | 0 | 0
Disposals |  | 0 | (300,000)
Impairments |  | (10,700,000) |
Currency translation |  | (3,100,000) | (500,000)
BALANCE | 0 | 0 | $ 13,900,000
Accumulated impairment | $ 57,200,000 | $ 57,200,000 |

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