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Natural Disaster (Details)
$ in Millions
1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended 14 Months Ended
Aug. 31, 2021
facility
Sep. 30, 2022
USD ($)
facility
Sep. 30, 2022
USD ($)
facility
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
facility
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
facility
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]              
Operating expenses     $ 320.1 $ 325.4 $ 1,019.6 $ 982.7  
Hurricane              
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]              
Number of off-track betting facilities damaged | facility 15            
Number of off-track betting facilities closed | facility   2 2   2   2
Operating expenses         $ 2.3    
Insurance recoveries         8.0   $ 10.7
Insurance recovery receivable   $ 1.0 $ 1.0   $ 1.0   $ 1.0
Business interruption claim   $ 4.1