Software (Details) (USD $)	12 Months Ended					3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Software development	Dec. 31, 2012 Software development	Dec. 31, 2013 WMS Acquisition	Dec. 31, 2013 WMS Acquisition Intellectual property	Dec. 31, 2013 Gaming	Dec. 31, 2013 Integrating Scientific Games and WMS WMS Acquisition	Dec. 31, 2013 Integrating Scientific Games and WMS WMS Acquisition
Capitalized Computer Software, Net [Abstract]
Software	$ 457,700,000	$ 182,800,000
Accumulated amortization	(114,200,000)	(95,600,000)
Software, net	343,500,000	87,200,000
Capitalized software additions				37,900,000	44,000,000	257,800,000	201,200,000
Amortization of capitalized software	39,600,000	28,000,000	24,000,000
Restructuring, accelerated depreciation expense								8,000,000	4,600,000	4,600,000
Asset impairment charge	$ 3,400,000	$ 3,100,000	$ 6,400,000