Goodwill - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Oct. 09, 2019	Jan. 11, 2019
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 367.1	$ 366.8		$ 366.8
Restatement Adjustment | Gaming Segment
Indefinite-lived Intangible Assets [Line Items]
Goodwill			$ (4.0)
Restatement Adjustment | TwinSpires
Indefinite-lived Intangible Assets [Line Items]
Goodwill			$ 4.0
Presque Isle
Indefinite-lived Intangible Assets [Line Items]
Goodwill						$ 26.1
Presque Isle | Casino Segment
Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired	26.1
Turfway Park
Indefinite-lived Intangible Assets [Line Items]
Goodwill					$ 2.7
Turfway Park | Casino Segment
Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired	$ 3.0