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Intangible Franchise Rights and Goodwill - Roll-Forward of Intangible Franchise Rights by Reportable Segment (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Indefinite-lived Intangible Assets [Line Items] |  |
BALANCE | $ 232.8 | $ 253.5
U.S. |  |
Indefinite-lived Intangible Assets [Line Items] |  |
BALANCE | 213.4 | 223.1
U.K. |  |
Indefinite-lived Intangible Assets [Line Items] |  |
BALANCE | 19.4 | 30.4
Brazil |  |
Indefinite-lived Intangible Assets [Line Items] |  |
BALANCE | $ 0.0 | $ 0.1

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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