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Business and Summary of Significant Accounting Policies - Goodwill and Intangible Franchise Rights (Details) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) geographic_region | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Accounting Policies [Abstract] |  |  |  |  |
Number of geographic regions | geographic_region |  |  | 3 |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Goodwill impairment | $ 0 |  | $ 10,700,000 |  |
Valuation, Income Approach [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Goodwill fair value approach | 0.80 |  | 0.80 |  |
Valuation, Market Approach [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Goodwill fair value approach | 0.20 |  | 0.20 |  |
Brazil |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Goodwill impairment |  | $ 10,700,000 | $ 10,700,000 | $ 0 | $ 0
Franchise Rights |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Impairment of intangibles |  |  | $ 20,800,000 | $ 19,000,000.0 | $ 38,700,000
Measurement Input, Discount Rate [Member] | U.S. |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
WACC applied | 0.11 |  | 0.11 |  |
Measurement Input, Discount Rate [Member] | Brazil |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
WACC applied | 0.16 |  | 0.16 |  |
Measurement Input, Discount Rate [Member] | U.K. |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
WACC applied | 0.13 |  | 0.13 |  |

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