Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	$ 224,775	$ 238,865
Accumulated Amortization	(86,965)	(47,236)
Net Carrying Amount	137,810	191,629
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	496,153	549,972
Amortization expense	56,100	13,300	$ 12,200
Big Fish Games
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		162,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		200,000
Calder
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Annual license fees paid	2,300	2,300
Trademarks
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	225,729	225,729
Slots gaming rights
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	128,890	128,890
Illinois Horseracing Equity Trust
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	3,307	3,307
Other
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	417	417
Developed technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	87,000	87,000
Accumulated Amortization	(23,264)	(931)
Net Carrying Amount	63,736	86,069
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	75,133	89,203
Accumulated Amortization	(47,149)	(39,399)
Net Carrying Amount	27,984	49,804
Strategic development
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	30,500	30,500
Accumulated Amortization	(6,585)	(263)
Net Carrying Amount	23,915	30,237
In-process research & development
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	12,700	12,700
Accumulated Amortization	(2,622)	(105)
Net Carrying Amount	10,078	12,595
Favorable contracts
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	11,000	11,000
Accumulated Amortization	(5,554)	(4,907)
Net Carrying Amount	5,446	6,093
Other
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	3,699	3,719
Accumulated Amortization	(356)	(326)
Net Carrying Amount	3,343	3,393
Slots gaming license
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	2,250	2,250
Accumulated Amortization	(1,125)	(1,125)
Net Carrying Amount	1,125	1,125
Table games license
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	2,493	2,493
Accumulated Amortization	(310)	(180)
Net Carrying Amount	2,183	$ 2,313
TwinSpires | Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	(14,000)
Accumulated Amortization	$ 14,000