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Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | $ 218.2 | $ 218.2 |  |
Accumulated Amortization | (162.2) | (151.4) |  |
Net | 55.9 | 66.8 |  |
Franchising Rights |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | 214.8 | 214.8 |  |
Accumulated Amortization | (161.8) | (151.0) |  |
Net | 53.0 | 63.8 | $ 59.0 | $ 69.0
Reacquired Franchise Rights |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Net | 0.0 | 0.0 | 5.1 | 5.7
Favorable leaseholds |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Gross | 3.4 | 3.4 |  |
Accumulated Amortization | (0.5) | (0.4) |  |
Net | $ 2.9 | $ 3.0 | $ 3.1 | $ 3.2

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