Goodwill and Other Intangible Assets - Additional Information (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) license	Dec. 31, 2018 USD ($) machine game	Oct. 01, 2020 reporting_unit
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill	$ 113.0	$ 113.0	$ 88.0
Number of reporting units with negative carrying values | reporting_unit					7
Purchase of intangible assets		4.8	$ 11.7	$ 81.6
Number of gamming license category | license			2
Number of slot machines | machine				750
Number of table games | game				30
Intangible asset amortization expense		21.7	$ 24.7	$ 17.1
Northeast segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill		10.3
Northeast segment | Operating segments
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill	43.5	43.5	10.3
South segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill		17.4
South segment | Operating segments
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill	9.0	9.0	17.4
Midwest segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill		60.3
Midwest segment | Operating segments
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill	60.5	60.5	60.3
West segment | Operating segments
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of goodwill		0.0	0.0
Gaming licenses
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	437.0		62.6
Purchase of intangible assets		1.3
Gaming licenses | Pennsylvania
Schedule Of Goodwill And Intangible Assets [Line Items]
Purchase of intangible assets			10.0	20.0
Gaming licenses | York County, Pennsylvania
Schedule Of Goodwill And Intangible Assets [Line Items]
Purchase of intangible assets				50.1
Gaming licenses | Berks County, Pennsylvania
Schedule Of Goodwill And Intangible Assets [Line Items]
Purchase of intangible assets				$ 7.5
Gaming licenses | Northeast segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	177.0	55.1
Gaming licenses | South segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	166.0	7.5
Gaming licenses | Midwest segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	94.0
Trademarks
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	61.5		$ 20.0
Trademarks | Northeast segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	17.0	11.5
Trademarks | South segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	17.0	6.5
Trademarks | Midwest segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	15.0	$ 2.0
Trademarks | West segment
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of other intangible assets	$ 12.5