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Description of Business (Details) slot_machine in Thousands, $ in Millions					3 Months Ended
	Mar. 08, 2019 USD ($)	Mar. 04, 2019 USD ($)	Jan. 11, 2019 USD ($)	Oct. 31, 2018 USD ($)	Mar. 31, 2019 USD ($) slot_machine state	Mar. 31, 2018 USD ($)	Jan. 09, 2018 USD ($)
Variable Interest Entity [Line Items]
Number of slot machines \| slot_machine					11
Number of states in which Gaming segment has slot machines and video lottery terminals \| state					8
Proceeds from new credit facilities					$ 1,231.9	$ 100.9
Stock split, conversion ratio				3
Clairvest Group Inc.
Variable Interest Entity [Line Items]
Ownership percentage					61.30%
Aggregated cash consideration paid at closing of the Sale Transaction				$ 291.0
Presque Isle Downs & Casino And Lady Luck Casino
Variable Interest Entity [Line Items]
Payments to acquire business			$ 178.9
Lady Luck Nemacolin
Variable Interest Entity [Line Items]
Payments to acquire business	$ 0.1
Miami Valley Gaming LLC
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage					50.00%
Midwest Gaming Holdings, LLC
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage		42.00%		100.00%	61.30%
Aggregated cash consideration paid at closing of the Sale Transaction		$ 406.6
Clairvest Group Inc.
Variable Interest Entity [Line Items]
Aggregated cash consideration paid at closing of the Sale Transaction		409.8
Transaction costs		3.2
Deferred tax liability		109.6
Midwest Gaming Holdings, LLC
Variable Interest Entity [Line Items]
Proceeds from new credit facilities		$ 300.0
Discontinued Operations, Disposed of by Sale \| Big Fish Games
Variable Interest Entity [Line Items]
Aggregate consideration							$ 990.0