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Software and Other Intangible Assets - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]      
Software, net $ 191,468,000 $ 129,314,000  
Software, accumulated amortization 95,300,000 69,400,000  
Other intangible assets amortization expense 18,500,000 12,100,000 6,400,000
Minimum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 3 years    
Maximum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 20 years    
Software Marketed for External Sale
      
Finite-Lived Intangible Assets [Line Items]      
Software, net 94,000,000 100,400,000  
Software, amortization expense 13,600,000 13,800,000 6,300,000
Software Marketed for External Sale | Minimum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 3 years    
Software Marketed for External Sale | Maximum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 10 years    
Software Acquired or Developed for Internal Use
      
Finite-Lived Intangible Assets [Line Items]      
Software, net 97,500,000 28,900,000  
Software, amortization expense $ 19,100,000 $ 11,600,000 $ 8,100,000
Software Acquired or Developed for Internal Use | Minimum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 3 years    
Software Acquired or Developed for Internal Use | Maximum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 10 years