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Components of Long-Term Debt and Capital Lease Obligations (Parenthetical) (Detail)
Sep. 30, 2013
Nov. 27, 2012
6 3/4 % Senior Notes Due 2020
   
Long-Term Debt And Capital Lease Obligations [Line Items]    
Interest percentage 6.75%  
Debt maturity period 2020  
6.0% Senior Notes Due 2022
   
Long-Term Debt And Capital Lease Obligations [Line Items]    
Interest percentage 6.00%  
Debt maturity period 2022 2022