Asset Impairment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 0.0	$ 0.0	$ 17.5	$ 0.0
Online Wagering
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets			2.5
Presque Isle Downs & Casino | Gaming
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets			12.5
Gaming Rights
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets			15.0
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets			$ 2.5