Revenue Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 305.5	$ 1,323.1	$ 1,421.6	$ 2,605.7
Gaming
Disaggregation of Revenue [Line Items]
Revenues	259.2	1,062.1	1,162.1	2,096.7
Food and beverage
Disaggregation of Revenue [Line Items]
Revenues	13.1	126.7	118.2	251.9
Hotel
Disaggregation of Revenue [Line Items]
Revenues	9.1	80.2	69.7	151.6
Other
Disaggregation of Revenue [Line Items]
Revenues	24.1	54.1	71.6	105.5
Operating segments | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	102.7	599.1	623.4	1,149.7
Operating segments | South segment
Disaggregation of Revenue [Line Items]
Revenues	121.5	282.2	344.8	574.1
Operating segments | West segment
Disaggregation of Revenue [Line Items]
Revenues	17.7	164.2	144.3	322.9
Operating segments | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	36.0	268.2	264.1	539.5
Operating segments | Gaming | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	94.1	528.9	552.8	1,016.7
Operating segments | Gaming | South segment
Disaggregation of Revenue [Line Items]
Revenues	103.7	206.8	272.3	426.9
Operating segments | Gaming | West segment
Disaggregation of Revenue [Line Items]
Revenues	12.8	96.5	84.7	189.3
Operating segments | Gaming | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	33.5	229.9	229.7	463.7
Operating segments | Food and beverage | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	2.2	37.6	36.1	73.4
Operating segments | Food and beverage | South segment
Disaggregation of Revenue [Line Items]
Revenues	7.6	39.6	37.3	79.7
Operating segments | Food and beverage | West segment
Disaggregation of Revenue [Line Items]
Revenues	2.2	29.5	25.7	57.4
Operating segments | Food and beverage | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	1.0	19.6	18.8	40.7
Operating segments | Hotel | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	0.2	10.5	9.0	17.6
Operating segments | Hotel | South segment
Disaggregation of Revenue [Line Items]
Revenues	6.8	26.5	24.6	49.5
Operating segments | Hotel | West segment
Disaggregation of Revenue [Line Items]
Revenues	1.5	31.6	27.3	63.3
Operating segments | Hotel | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	0.6	11.6	8.8	21.2
Operating segments | Other | Northeast segment
Disaggregation of Revenue [Line Items]
Revenues	6.2	22.1	25.5	42.0
Operating segments | Other | South segment
Disaggregation of Revenue [Line Items]
Revenues	3.4	9.3	10.6	18.0
Operating segments | Other | West segment
Disaggregation of Revenue [Line Items]
Revenues	1.2	6.6	6.6	12.9
Operating segments | Other | Midwest segment
Disaggregation of Revenue [Line Items]
Revenues	0.9	7.1	6.8	13.9
Other
Disaggregation of Revenue [Line Items]
Revenues	27.6	9.4	47.9	19.5
Other | Gaming
Disaggregation of Revenue [Line Items]
Revenues	15.1	0.0	22.7	0.1
Other | Food and beverage
Disaggregation of Revenue [Line Items]
Revenues	0.1	0.4	0.3	0.7
Other | Hotel
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Other | Other
Disaggregation of Revenue [Line Items]
Revenues	12.4	9.0	24.9	18.7
Intersegment eliminations
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	(2.9)	0.0
Intersegment eliminations | Gaming
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	(0.1)	0.0
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	$ 0.0	$ 0.0	$ (2.8)	$ 0.0