Significant Accounting Policies - Revenue Recognition and Complimentaries (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 85.0	$ 52.8	$ 226.3	$ 154.3
Food and beverage
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	46.1	29.4	126.3	90.7
Hotel
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	35.7	21.9	92.8	58.6
Other
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 3.2	$ 1.5	$ 7.2	$ 5.0