Equity Method Investments Equity Method Investments (Details)	1 Months Ended	9 Months Ended		1 Months Ended		1 Months Ended
	Jun. 30, 2013 Northstar Lottery Group, LLC [Member] USD ($)	Sep. 30, 2013 Northstar Lottery Group, LLC [Member] USD ($)	Sep. 30, 2013 Northstar SupplyCo New Jersey, LLC [Member]	Jul. 31, 2013 Greek Consortium [Member] EUR (€)	Sep. 30, 2013 Greek Consortium [Member]	Oct. 31, 2013 Subsequent Event Northstar Lottery Group, LLC [Member] USD ($)
Schedule of Equity Method Investments [Line Items]
Northstar payment to the State of New Jersey	$ 120,000,000
Ownership percentage		17.69%	30.00%		16.50%
Contribution to Northstar		21,200,000
Contribution of working capital		1,100,000				7,200,000
Incentive compensation cap, percentage of net income		5.00%
Investee payment to the State cap, percentage of net income		2.00%
Payment to the State, shortfall credit		20,000,000
Economic interest			30.00%
Capital requirements, percentage			30.00%
Concession period				12 years
Minimum capital requirement				190,000,000
Minimum capital requirement, Scientific Games portion				€ 31,400,000