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Investment in and Advances to Unconsolidated Affiliates - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 06, 2019
Mar. 05, 2019
Mar. 31, 2020
Mar. 31, 2019
Investments in and Advances to Affiliates [Line Items]        
Proceeds from borrowings under long-term debt obligations     $ 719.8 $ 1,231.9
Midwest Gaming Holdings, LLC        
Investments in and Advances to Affiliates [Line Items]        
Equity method investment, ownership percentage 61.30% 42.00% 61.30%  
Aggregated cash consideration paid at closing of the Sale Transaction   $ 406.6    
Deferred tax liability   103.2 $ 103.2  
Equity method investment, difference between carrying amount and underlying equity     $ 834.0  
Clairvest Group Inc.        
Investments in and Advances to Affiliates [Line Items]        
Transaction costs   3.5    
Midwest Gaming Holdings, LLC        
Investments in and Advances to Affiliates [Line Items]        
Proceeds from borrowings under long-term debt obligations $ 300.0 $ 300.0    
High Plaines | Midwest Gaming Holdings, LLC        
Investments in and Advances to Affiliates [Line Items]        
Equity method investment, ownership percentage 36.00%   36.00%  
Casino Investors | Midwest Gaming Holdings, LLC        
Investments in and Advances to Affiliates [Line Items]        
Equity method investment, ownership percentage 2.70%   2.70%