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Other Intangible Assets (Tables)
 12 Months Ended
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:
 TradenamesFranchising
Rights		Reacquired Franchise RightsFavorable LeaseholdsOtherTotal
 (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, 2021468.0 59.0 5.1 3.1 4.2 539.4 
Amortization expense— (10.0)(0.4)(0.1)— (10.6)
Additions57.2 14.8 — — 0.8 72.8 
Disposition— — (4.7)— — (4.7)
Balance at December 31, 2022525.2 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 rightsFavorable leaseholdsOtherTotal
 (In millions)
2024$10.7 $0.2 $0.0 $10.9 
202510.7 0.2 $0.0 $10.9 
202610.7 0.2 $0.0 $10.9 
20279.8 0.2 $0.0 $10.0 
20280.7 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, 2023December 31, 2022
 GrossAccumulated
Amortization		NetGrossAccumulated
Amortization		Net
 (In millions)
Franchising rights$214.8 $(161.8)$53.0 $214.8 $(151.0)$63.8 
Favorable leaseholds3.4 (0.5)2.9 $3.4 $(0.4)3.0 
Total$218.2 $(162.2)$55.9 $218.2 $(151.4)$66.8