XML 60 R72.htm IDEA: XBRL DOCUMENT v2.4.0.8
Debt - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 12 Months Ended
Jun. 30, 2012
Y
Apr. 30, 2011
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Debt Instrument          
Credit facility maximum borrowing capacity $ 300        
Credit facility agreement expiration date Jun. 15, 2017        
Credit facility, number of one-year extensions 2        
Credit facility, duration of extension term (in years) 1        
Credit facility outstanding balance     0    
Credit facility borrowing capacity     300    
Term loan, face amount   300      
Repayment terms     The term loan is payable in quarterly installments, commencing in June 2012, with all remaining principal due on April 5, 2016.    
Term loan, due date   Apr. 05, 2016      
Term loan payable     274    
Interest rate on term loan     1.1875%    
Interest expenses on borrowing     $ 4 $ 4 $ 4
Revolving Credit Facility
          
Debt Instrument          
Revolving credit agreement period (in years) 5 years        
Term Loan
          
Debt Instrument          
Revolving credit agreement period (in years)     5 years