Fair Value Measurements - Narrative (Details)	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2014 Interest rate swaption USD ($)	Jun. 30, 2014 Interest rate swaption USD ($)	Jan. 31, 2014 Interest rate swaption USD ($)	Jun. 30, 2014 Interest rate swap USD ($)	Jun. 30, 2014 Interest rate swap USD ($)	Oct. 31, 2013 Interest rate swap USD ($)	Aug. 31, 2013 Interest rate swap USD ($)	May 31, 2013 Foreign exchange forward EUR (€)	Dec. 31, 2012 Foreign exchange forward	Jun. 30, 2014 Other assets Interest rate swaption USD ($)	Jun. 30, 2014 Other long-term liabilities Interest rate swap USD ($)	Jun. 30, 2014 LNS	Jun. 30, 2013 LNS
Derivatives Fair Value
Derivative notional amount			$ 150,000,000.0			$ 200,000,000.0	$ 500,000,000.0	€ 20,000,000
Derivative fixed interest rate			2.151%
Derivative premium			900,000
Gain (loss) on derivatives representing change in fair value of hedges	900,000	0		4,800,000	6,400,000
Derivative asset fair value										600,000
Derivative average fixed interest rate							2.151%
Basis spread on variable rate (as a percent)							1.00%
Derivative liability fair value											$ 7,900,000
Derivative weighted average forward exchange rate								1.269%	131.90%
Equity interest in derivative instrument held by Lotterie Nazionali												20.00%	20.00%