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Restructuring Plans - Narrative (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]    
Pre-tax employee termination and restructuring costs $ 5.6 $ 0.3
Gaming
   
Restructuring Cost and Reserve [Line Items]    
Number of immaterial business lines with exit costs 2