XML 77 R65.htm IDEA: XBRL DOCUMENT v2.4.0.8
Indebtedness - Senior Subordinated Notes - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
5.00% Senior Subordinated notes due 2023
   
Debt Instrument [Line Items]    
Aggregate principal amount of senior subordinated notes $ 750,000,000  
Interest rate on senior subordinated notes 5.00% [1] 5.00% [1]
Net proceeds from issuance of subordinated notes 738,800,000  
Deferred Finance Costs 11,200,000  
Aggregate principal amount of senior subordinated notes exchanged $ 0  
5.00% Senior Subordinated notes due 2023 | Senior note redeemed in March 15, 2018
   
Debt Instrument [Line Items]    
Maximum redemption price of notes as percentage of principal amount 102.50%  
5.00% Senior Subordinated notes due 2023 | Senior note redeemed in March 15, 2021
   
Debt Instrument [Line Items]    
Maximum redemption price of notes as percentage of principal amount 100.00%  
5.00% Senior Subordinated notes due 2023 | Senior note redeemed in March 15, 2016
   
Debt Instrument [Line Items]    
Maximum redemption price of notes as percentage of principal amount 105.00%  
Maximum percentage of original aggregate amount of notes that can be redeemed 35.00%  
Minimum percentage of original aggregate principal amount of notes to remain outstanding immediately after redemption 65.00%  
Maximum number of days after the date of the closing of the equity offering that the redemption should occur 60 days  
Subordinated Debt
   
Debt Instrument [Line Items]    
Maximum redemption price of notes as percentage of principal amount 101.00%  
[1] The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior subordinated notes is based on end of period market quotes, which are Level 2 inputs.