Significant Accounting Policies - Revenue Recognition and Complimentaries (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 52.8	$ 115.0	$ 154.3	$ 329.8
Food and beverage
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	29.4	66.7	90.7	195.3
Hotel
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	21.9	44.1	58.6	121.5
Other
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 1.5	$ 4.2	$ 5.0	$ 13.0