Significant Accounting Policies - Revenue Recognition and Complimentaries (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 76.9	$ 13.4	$ 141.3	$ 101.5
Food and beverage
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	44.1	7.3	80.2	61.3
Hotel
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	30.7	5.8	57.1	36.7
Other
Revenue from External Customer [Line Items]
Total complimentaries associated with gaming contracts	$ 2.1	$ 0.3	$ 4.0	$ 3.5