Revenue Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 1,129.7	$ 1,354.5	$ 2,551.3	$ 3,960.2
Gaming
Disaggregation of Revenue [Line Items]
Revenues	993.6	1,088.5	2,155.7	3,185.2
Food and beverage
Disaggregation of Revenue [Line Items]
Revenues	52.2	129.4	170.4	381.3
Hotel
Disaggregation of Revenue [Line Items]
Revenues	38.7	85.3	108.4	236.9
Other
Disaggregation of Revenue [Line Items]
Revenues	45.2	51.3	116.8	156.8
Operating segments | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	545.1	628.9	1,168.5	1,778.6
Operating segments | South segment
Disaggregation of Revenue [Line Items]
Revenues	255.6	276.6	600.4	850.7
Operating segments | West segment
Disaggregation of Revenue [Line Items]
Revenues	78.7	161.5	223.0	484.4
Operating segments | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	229.1	275.8	493.2	815.3
Operating segments | Gaming | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	508.0	555.2	1,060.8	1,571.9
Operating segments | Gaming | South segment
Disaggregation of Revenue [Line Items]
Revenues	208.0	201.2	480.3	628.1
Operating segments | Gaming | West segment
Disaggregation of Revenue [Line Items]
Revenues	54.0	93.3	138.7	282.6
Operating segments | Gaming | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	212.7	236.1	442.4	699.8
Operating segments | Food and beverage | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	15.8	39.4	51.9	112.8
Operating segments | Food and beverage | South segment
Disaggregation of Revenue [Line Items]
Revenues	19.8	39.0	57.1	118.7
Operating segments | Food and beverage | West segment
Disaggregation of Revenue [Line Items]
Revenues	9.9	29.5	35.6	86.9
Operating segments | Food and beverage | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	6.6	21.0	25.4	61.7
Operating segments | Hotel | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	4.0	13.7	13.0	31.3
Operating segments | Hotel | South segment
Disaggregation of Revenue [Line Items]
Revenues	20.6	27.5	45.2	77.0
Operating segments | Hotel | West segment
Disaggregation of Revenue [Line Items]
Revenues	9.0	32.4	36.3	95.7
Operating segments | Hotel | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	5.1	11.7	13.9	32.9
Operating segments | Other | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	17.3	20.6	42.8	62.6
Operating segments | Other | South segment
Disaggregation of Revenue [Line Items]
Revenues	7.2	8.9	17.8	26.9
Operating segments | Other | West segment
Disaggregation of Revenue [Line Items]
Revenues	5.8	6.3	12.4	19.2
Operating segments | Other | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	4.7	7.0	11.5	20.9
Other
Disaggregation of Revenue [Line Items]
Revenues	23.7	12.4	71.6	31.9
Other | Gaming
Disaggregation of Revenue [Line Items]
Revenues	11.0	3.3	33.7	3.4
Other | Food and beverage
Disaggregation of Revenue [Line Items]
Revenues	0.1	0.5	0.4	1.2
Other | Hotel
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Other | Other
Disaggregation of Revenue [Line Items]
Revenues	12.6	8.6	37.5	27.3
Intersegment eliminations
Disaggregation of Revenue [Line Items]
Revenues	(2.5)	(0.7)	(5.4)	(0.7)
Intersegment eliminations | Gaming
Disaggregation of Revenue [Line Items]
Revenues	(0.1)	(0.6)	(0.2)	(0.6)
Intersegment eliminations | Food and beverage
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Intersegment eliminations | Hotel
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Intersegment eliminations | Other
Disaggregation of Revenue [Line Items]
Revenues	$ (2.4)	$ (0.1)	$ (5.2)	$ (0.1)