Litigation (Details) In Millions, unless otherwise specified			1 Months Ended				12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Apr. 30, 2012 Barcrest EUR (€)	Feb. 28, 2015 Barcrest Subsequent event EUR (€)	May 31, 2013 Ecosalud USD ($)	May 31, 2013 Ecosalud COP	Dec. 31, 2014 WMS merger USD ($)	Dec. 31, 2014 Oregon State Lottery Matter USD ($)	Dec. 31, 2014 Guarantee of business revenue USD ($)	Dec. 31, 2014 Performance guarantee USD ($)
Litigation
Loss contingency accrual	$ 47.3	$ 25.9
Legal contingencies, liability, high range	14.5								5.0
Surety bond										4.0
Third party erroneous winning jackpot face amount (in excess of 400 million euros)			400.0
Third party loss			1.5
Litigation settlement amount				25.0	36.0	90,000.0
Damages sought							0.9
Damages claimed								$ 134.0