Equity Investments - Schedules of Equity Method Investments (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2011	Oct. 31, 2010	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Equity investments			$ 179.9	$ 228.5
Earnings (loss) from equity investments			13.0	16.9	$ (7.6)
Distributed earnings from equity investments			51.7	63.6	77.3
Revenue from the sale of instant tickets to equity method investment			93.7	91.7	90.6
LNS
Schedule of Equity Method Investments [Line Items]
Equity investments			80.0	104.5
Earnings (loss) from equity investments			14.0	14.8	17.5
Distributed earnings from equity investments			34.3	31.5	49.9
Revenue from the sale of instant tickets to equity method investment			45.3	46.6	47.1
Northstar IL
Schedule of Equity Method Investments [Line Items]
Equity investments			0.0	0.0
Earnings (loss) from equity investments			(0.4)	(2.7)	(34.8)
Distributed earnings from equity investments			0.0	0.0	0.0
Revenue from the sale of instant tickets to equity method investment			22.6	20.8	24.5
Northstar NJ and NJ Supply Co
Schedule of Equity Method Investments [Line Items]
Equity investments			24.8	27.3
Earnings (loss) from equity investments			1.0	(4.0)	(3.7)
Distributed earnings from equity investments			4.8	0.0	0.0
Revenue from the sale of instant tickets to equity method investment			20.9	18.3	12.7
GLB and CSG
Schedule of Equity Method Investments [Line Items]
Equity investments			38.3	51.2
Earnings (loss) from equity investments			(8.0)	3.5	7.8
Distributed earnings from equity investments			1.7	4.7	6.4
ITL
Schedule of Equity Method Investments [Line Items]
Equity investments			12.3	20.9
Earnings (loss) from equity investments			0.0	1.0	0.3
Distributed earnings from equity investments			5.9	10.0	17.4
Other
Schedule of Equity Method Investments [Line Items]
Equity investments			24.5	24.6
Earnings (loss) from equity investments			6.4	4.3	5.3
Distributed earnings from equity investments			5.0	17.4	3.6
Revenue from the sale of instant tickets to equity method investment			$ 4.9	$ 6.0	$ 6.3
Lottery | LNS
Schedule of Equity Method Investments [Line Items]
Agreement term		9 years
Equity interest (as a percent)			20.00%
Lottery | Northstar IL
Schedule of Equity Method Investments [Line Items]
Agreement term	10 years
Equity interest (as a percent)			20.00%
Lottery | Northstar NJ
Schedule of Equity Method Investments [Line Items]
Equity interest (as a percent)			17.69%
Lottery | Northstar SupplyCo New Jersey, LLC
Schedule of Equity Method Investments [Line Items]
Equity interest (as a percent)			30.00%