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Intangible Franchise Rights and Goodwill - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Countries and States [Line Items] |  |  |  |  |
Goodwill impairment | $ 0 |  | $ 10,700,000 |  |
Brazil |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Goodwill impairment |  | $ 10,700,000 | 10,700,000 | $ 0 | $ 0
Franchise Rights |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Impairment of intangibles |  |  | 20,800,000 | 19,000,000.0 | 38,700,000
U.S. |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Goodwill impairment |  |  | 0 |  |
Impairment charges | 9,700,000 |  |  |  |
Additions through acquisitions |  |  |  | 13,400,000 | 38,300,000
U.S. | Franchise Rights |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Additions through acquisitions |  |  |  | 12,100,000 |
U.K. |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Goodwill impairment |  |  | 0 |  |
Additions through acquisitions |  |  |  | $ 5,600,000 | $ 500,000
U.K. | Franchise Rights |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Impairment of intangibles |  | 11,100,000 |  |  |
Brazil |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Goodwill impairment |  |  | 10,700,000 |  |
Brazil | Franchise Rights |  |  |  |  |
Countries and States [Line Items] |  |  |  |  |
Impairment of intangibles |  | $ 100,000 |  |  |
Intangible assets balance | $ 0 |  | $ 0 |  |

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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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