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Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Other Intangible Assets Roll Forward | Changes in the carrying amounts for the years ended December 31, 2023, 2022 and 2021 are as follows:
| Tradenames |  | Franchising Rights |  |  |  | Reacquired Franchise Rights |  | Favorable Leaseholds |  | Other |  | Total
| (In millions)
Balance at December 31, 2020 | $ | 468.0 |  |  | $ | 69.0 |  |  |  |  | $ | 5.7 |  |  | $ | 3.2 |  |  | $ | 3.8 |  |  | $ | 549.7 |
Amortization expense | — |  |  | (10.0) |  |  |  |  | (0.6) |  |  | (0.1) |  |  | — |  |  | (10.7) |
Additions | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 0.4 |  |  | 0.4 |
Balance at December 31, 2021 | 468.0 |  |  | 59.0 |  |  |  |  | 5.1 |  |  | 3.1 |  |  | 4.2 |  |  | 539.4 |
Amortization expense | — |  |  | (10.0) |  |  |  |  | (0.4) |  |  | (0.1) |  |  | — |  |  | (10.6) |
Additions | 57.2 |  |  | 14.8 |  |  |  |  | — |  |  | — |  |  | 0.8 |  |  | 72.8 |
Disposition | — |  |  | — |  |  |  |  | (4.7) |  |  | — |  |  | — |  |  | (4.7) |
Balance at December 31, 2022 | 525.2 |  |  | 63.8 |  |  |  |  | — |  |  | 3.0 |  |  | 5.0 |  |  | 597.0 |
Impairment | — |  |  | — |  |  |  |  | — |  |  | — |  |  | (0.3) |  |  | (0.3) |
Amortization expense | — |  |  | (10.8) |  |  |  |  | — |  |  | (0.1) |  |  | 0.0 |  |  | (10.9) |
Additions | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 0.2 |  |  | 0.2 |
Balance at December 31, 2023 | $ | 525.2 |  |  | $ | 53.0 |  |  |  |  | $ | — |  |  | $ | 2.9 |  |  | $ | 4.9 |  |  | $ | 586.0 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | The estimated annual amortization expense for the next five fiscal years are as follows:
| Franchising rights |  | Favorable leaseholds |  | Other |  | Total
| (In millions)
2024 | $ | 10.7 |  |  | $ | 0.2 |  |  | $ | 0.0 |  |  | $ | 10.9 |
2025 | 10.7 |  |  | 0.2 |  |  | $ | 0.0 |  |  | $ | 10.9 |
2026 | 10.7 |  |  | 0.2 |  |  | $ | 0.0 |  |  | $ | 10.9 |
2027 | 9.8 |  |  | 0.2 |  |  | $ | 0.0 |  |  | $ | 10.0 |
2028 | 0.7 |  |  | 0.2 |  |  | $ | 0.0 |  |  | $ | 0.9 |
Schedule of Finite-Lived Intangible Assets by Major Class | Gross and net carrying amounts of intangible assets subject to amortization at December 31, 2023 and 2022 are as follows:
| December 31, 2023 |  | December 31, 2022
| Gross |  | Accumulated Amortization |  | Net |  | Gross |  | Accumulated Amortization |  | Net
| (In millions)
Franchising rights | $ | 214.8 |  |  | $ | (161.8) |  |  | $ | 53.0 |  |  | $ | 214.8 |  |  | $ | (151.0) |  |  | $ | 63.8 |
Favorable leaseholds | 3.4 |  |  | (0.5) |  |  | 2.9 |  |  | $ | 3.4 |  |  | $ | (0.4) |  |  | 3.0 |
Total | $ | 218.2 |  |  | $ | (162.2) |  |  | $ | 55.9 |  |  | $ | 218.2 |  |  | $ | (151.4) |  |  | $ | 66.8 |

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