Fair Value (Fair Value And Carrying Value Of Debt Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 02, 2011	Dec. 31, 2010
Industrial revenue bonds, capital leases and other, Fair Value	$ 55,335	$ 55,334
Industrial revenue bonds, capital leases and other, Carrying Value	55,335	55,334
Total long-term debt, Fair Value	1,694,335	1,737,193
Total long-term debt, Carrying Value	1,608,335	1,653,582
Less current portion, Fair Value	463,585	348,799
Less current portion, Carrying Value	453,185	350,588
Long-term debt, less current portion, Fair Value	1,230,750	1,388,394
Long-term debt, less current portion, Carrying Value	1,155,150	1,302,994
5.75% Notes, Payable January 15, 2011 [Member]
Notes, Fair Value		296,459
Notes, Carrying Value		298,248
Interest rate percentage	5.75%
7.20% Senior Notes, Payable April 15, 2012 [Member]
Notes, Fair Value	410,400	422,400
Notes, Carrying Value	400,000	400,000
Interest rate percentage	7.20%
6.125% Notes, Payable January 15, 2016 [Member]
Notes, Fair Value	975,600	963,000
Notes, Carrying Value	900,000	900,000
Interest rate percentage	6.125%
Four Year Senior Secured Credit Facility, Due September 2, 2013 [Member]
Notes, Fair Value	253,000
Notes, Carrying Value	$ 253,000

Industrial revenue bonds capital leases and other carrying value.

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Industrial revenue bonds capital leases and other fair value.

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- Definition

Long term debt and capital lease obligations current fair value.

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- Definition

Long term debt and capital lease obligations non current fair value.

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- Definition

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
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). 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.

+ References

Reference 1: 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)
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-Publisher SEC
-Name Regulation S-X (SX)
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- Definition

Interest rate stated in the contractual debt agreement.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
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-Section 02
-Paragraph 22
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future.

+ References

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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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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. This item represents notes payable as of the balance sheet date.

+ References

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-Publisher FASB
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