Debt Obligations - Debt & Capital Leases (Details) (USD $) In Thousands, unless otherwise specified	Jun. 26, 2011	Dec. 26, 2010
Total debt & capital lease obligations
Total debt	$ 993,905	$ 989,719
Capital lease obligations	6,713	6,724
Total debt and capital lease obligations	1,000,618	996,443
Fair value of long-term debt	887,000	1,100,000
Notes Due 2015 Called 2011 [Member]
Total debt & capital lease obligations
Current portion of long-term debt	229,684
Long term debt		227,680
Interest rate on debt	14.053%
Principal amount of debt	250,000
Notes Due 2012 [Member]
Total debt & capital lease obligations
Long term debt	74,835	74,771
Interest rate on debt	4.61%
Notes Due 2015 [Member]
Total debt & capital lease obligations
Long term debt	249,875	249,860
Interest rate on debt	5.00%
Notes Due 2016 [Member]
Total debt & capital lease obligations
Long term debt	220,439	220,102
Interest rate on debt	6.625%
Option To Repurchase Headquarters Building 2019 [Member]
Total debt & capital lease obligations
Long term debt	$ 219,072	$ 217,306

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 7
-Section 03
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Section 50
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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 210
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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

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-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
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-Paragraph 16, 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Interest rate stated in the contractual debt agreement.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Carrying value as of the balance sheet date of the portion of long-term, uncollateralized debt obligations due within one year or the normal operating cycle, if longer.

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