Long-Term Debt (Detail) (USD $) In Thousands	Sep. 25, 2011	Dec. 26, 2010
Debt Disclosure [Line Items]
Long-term Debt	$ 1,918,424	$ 2,352,242
Unsecured Fixed Rate Notes 5.75 Percent Paid 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	306,500	306,397
Borrowings under revolving credit agreements expiring September 2014
Debt Disclosure [Line Items]
Long-term Debt	395,000	221,000
Unsecured notes bearing fixed rate interest at 8.75% due November 2014
Debt Disclosure [Line Items]
Long-term Debt	247,432	246,924
Unsecured notes bearing fixed rate interest at 10% due June 2015
Debt Disclosure [Line Items]
Long-term Debt	59,126	58,007
Unsecured notes bearing fixed rate interest at 6.375% due September 2015
Debt Disclosure [Line Items]
Long-term Debt	247,876	247,535
Unsecured notes bearing fixed rate interest at 10% due April 2016
Debt Disclosure [Line Items]
Long-term Debt	168,742	165,950
Unsecured notes bearing fixed rate interest at 9.375% due November 2017
Debt Disclosure [Line Items]
Long-term Debt	247,080	246,830
Unsecured notes bearing fixed rate interest at 7.125% due September 2018
Debt Disclosure [Line Items]
Long-term Debt	$ 246,668	$ 246,403