Equity Investments - LNS (Details) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Oct. 31, 2010 Lotterie Nazionali S.r.l.	Dec. 31, 2014 Lotterie Nazionali S.r.l. USD ($)	Dec. 31, 2013 Lotterie Nazionali S.r.l. USD ($)	Dec. 31, 2012 Lotterie Nazionali S.r.l. USD ($)	Dec. 31, 2011 Lotterie Nazionali S.r.l. EUR (€)
Schedule of Equity Method Investments [Line Items]
Equity interest (as a percent)					20.00%
Concession, initial term				9 years
Concession, extension term				9 years
Equity investments	$ 288.2	$ 367.2			$ 2.1
Upfront fees associated with the new concession								800.0
Upfront fees amortization								89.0
Proportionate share of amortization of upfront fees								18.0
Earnings (loss) from equity investments	(7.6)	1.5	28.1		17.6	17.9	17.9
Revenue from the sale of instant tickets to equity method investment					47.1	52.0	52.0
Accounts receivable from equity method investment					10.7
Proceeds from Equity Method Investment, Dividends or Distributions	28.5	29.5	38.1		18.5	18.3	17.7
Additions to equity method investments					$ 31.5	$ 17.6	$ 21.0