Equity Method Investments (Details)	1 Months Ended	6 Months Ended		1 Months Ended		1 Months Ended
	Jun. 30, 2013 Northstar Lottery Group, LLC USD ($)	Jun. 30, 2013 Northstar Lottery Group, LLC USD ($)	Jun. 30, 2013 Northstar SupplyCo New Jersey, LLC	Dec. 31, 2012 Greek Consortium	Jun. 30, 2013 Greek Consortium	Jul. 31, 2013 Subsequent Event Greek Consortium EUR (€)
Schedule of Equity Method Investments [Line Items]
Ownership percentage	17.69%	17.69%	30.00%		16.50%
Northstar payment to the State of New Jersey	$ 120,000,000
Contribution to Northstar	21,200,000
Contribution of working capital	1,100,000					6,600,000
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