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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
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