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Long-Term Debt (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 25, 2011
Dec. 26, 2010
Debt Disclosure [Line Items]    
Long-term Debt $ 1,760,363 $ 2,352,242
Unsecured Fixed Rate Notes 5.75 Percent due June 2011
   
Debt Disclosure [Line Items]    
Long-term Debt   433,196
Unsecured Floating Rate Term Loan Due July 2011
   
Debt Disclosure [Line Items]    
Long-term Debt   180,000
Unsecured notes bearing fixed rate interest at 6.375% due April 2012
   
Debt Disclosure [Line Items]    
Long-term Debt 306,534 306,397
Borrowings under revolving credit agreements expiring September 2014
   
Debt Disclosure [Line Items]    
Long-term Debt 235,000 221,000
Unsecured notes bearing fixed rate interest at 8.75% due November 2014
   
Debt Disclosure [Line Items]    
Long-term Debt 247,609 246,924
Unsecured notes bearing fixed rate interest at 10% due June 2015
   
Debt Disclosure [Line Items]    
Long-term Debt 59,522 58,007
Unsecured notes bearing fixed rate interest at 6.375% due September 2015
   
Debt Disclosure [Line Items]    
Long-term Debt 247,995 247,535
Unsecured notes bearing fixed rate interest at 10% due April 2016
   
Debt Disclosure [Line Items]    
Long-term Debt 169,775 165,950
Unsecured notes bearing fixed rate interest at 9.375% due November 2017
   
Debt Disclosure [Line Items]    
Long-term Debt 247,168 246,830
Unsecured notes bearing fixed rate interest at 7.125% due September 2018
   
Debt Disclosure [Line Items]    
Long-term Debt $ 246,760 $ 246,403