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Long-Term Debt (Parenthetical) (Detail) | Sep. 25, 2011 | Dec. 26, 2010
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Unsecured Fixed Rate Notes 5.75 Percent Paid June 2011 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate |  | 5.75%
Unsecured notes bearing fixed rate interest at 6.375% due April 2012 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 6.375% | 6.375%
Unsecured notes bearing fixed rate interest at 8.75% due November 2014 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 8.75% | 8.75%
Unsecured notes bearing fixed rate interest at 10% due June 2015 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 10.00% | 10.00%
Unsecured notes bearing fixed rate interest at 6.375% due September 2015 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 6.375% | 6.375%
Unsecured notes bearing fixed rate interest at 10% due April 2016 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 10.00% | 10.00%
Unsecured notes bearing fixed rate interest at 9.375% due November 2017 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 9.375% | 9.375%
Unsecured notes bearing fixed rate interest at 7.125% due September 2018 |  |
Debt Disclosure [Line Items] |  |
Long-term Debt, interest rate | 7.125% | 7.125%

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- Definition Debt Disclosure [Line Items] + Details
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- Definition Interest rate stated in the contractual debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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