Litigation - Narrative (Details) In Millions, unless otherwise specified			0 Months Ended		1 Months Ended		6 Months Ended	0 Months Ended	12 Months Ended		6 Months Ended
	Jun. 30, 2014 USD ($)	Dec. 31, 2013 USD ($)	Apr. 16, 2012 Czech Republic Barcrest EUR (€)	Apr. 16, 2012 Czech Republic Barcrest EUR (€)	May 31, 2013 Ecosalud USD ($)	May 31, 2013 Ecosalud COP	Jun. 30, 2014 WMS Merger USD ($)	Jun. 13, 2014 International Gaming Technology USD ($)	Dec. 31, 2012 International Gaming Technology USD ($)	Jun. 30, 2014 Performance Guarantee USD ($)	Jun. 30, 2014 Minimum Guarantee of Business Revenue USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual	$ 23.4	$ 25.9
Loss contingency possible amount of damages											5.0
Loss contingency deposit of surety bond										4.0
Litigation settlement, amount					48	90,000
Loss contingency, third party erroneous winning jackpot face amount			400.0
Loss contingency, third party loss				1.5
Loss contingency, damages sought, value							0.85		50.00
Loss contingency, damages claimed, value									25.0
Loss contingency, interest expense									11.0
Loss contingency, damages paid								$ 8.0