Significant Accounting Policies - Revenue Recognition and Complimentaries (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 13.4	$ 109.4	$ 101.5	$ 214.8
Food and beverage
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	7.3	64.1	61.3	128.6
Hotel
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	5.8	40.8	36.7	77.4
Other
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 0.3	$ 4.5	$ 3.5	$ 8.8