XML 35 R43.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value - Additional Information (Detail) (USD $)
Sep. 30, 2014
Aug. 31, 2014
Dec. 31, 2013
Fair Value Measurements [Line Items]      
Principal amount $ 1,474,552,000    
Term Loans [Member]
     
Fair Value Measurements [Line Items]      
Principle amount of debt 897,600,000    
Fair value of term loan 889,800,000    
Principal amount 892,400,000    
Convertible Debt [Member]
     
Fair Value Measurements [Line Items]      
Principle amount of debt   575,000,000  
Principal amount 575,000,000   0
Fair value of exchangeable senior notes $ 639,700,000