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Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | $ 218.7 | $ 218.7 |  |
Accumulated Amortization | (173.2) | (162.3) |  |
Net | $ 45.5 | $ 56.4 |  |
Weighted Average Remaining Period | 7 years 9 months 18 days | 8 years 1 month 6 days |  |
Franchising Rights |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | $ 214.8 | $ 214.8 |  |
Accumulated Amortization | (172.5) | (161.8) |  |
Net | $ 42.3 | $ 53.0 | $ 63.8 | $ 59.0
Weighted Average Remaining Period | 7 years 7 months 6 days | 7 years 10 months 24 days |  |
Favorable leaseholds |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | $ 3.4 | $ 3.4 |  |
Accumulated Amortization | (0.6) | (0.5) |  |
Net | $ 2.8 | $ 2.9 | $ 3.0 | $ 3.1
Weighted Average Remaining Period | 10 years 1 month 6 days | 11 years 1 month 6 days |  |
Other |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | $ 0.5 | $ 0.5 |  |
Accumulated Amortization | (0.1) | (0.0) |  |
Net | $ 0.4 | $ 0.5 |  |
Weighted Average Remaining Period | 13 years | 14 years |  |

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