Debt (Details)	9 Months Ended
Oct. 02, 2011
Indebtedness under Revolver and Term Loan Bears Interest [Abstract]
Bonds fixed coupon rates maximum	4.10%
Unused Letters of Credit [Member]
Indebtedness under Revolver and Term Loan Bears Interest [Abstract]
Bonds fixed coupon rates minimum	2.00%
Bonds fixed coupon rates maximum	3.00%
Unused Revolver [Member]
Indebtedness under Revolver and Term Loan Bears Interest [Abstract]
Bonds fixed coupon rates minimum	0.375%
Bonds fixed coupon rates maximum	0.50%
Maximum [Member]
Indebtedness under Revolver and Term Loan Bears Interest [Abstract]
Debt instrument interest rate in addition to LIBOR	3.00%
Debt instrument interest rate in addition to base rate borrowings	2.00%
Maximum Leverage Ratios
Through and including the last day of the fiscal year 2011	5.25
First day of fiscal year 2012 through and including that last day of fiscal year 2012	5.00
First day of fiscal year 2013 through and including that last day of fiscal year 2013	4.75
Thereafter	4.25
Maximum senior secured leverage ratios
Through and including the last day of the fiscal year 2012	3.25
First day of the third quarter of fiscal year 2012 through and including that last day of the second quarter of the fiscal year 2013	3.00
Thereafter	2.75
Minimum [Member]
Indebtedness under Revolver and Term Loan Bears Interest [Abstract]
Debt instrument interest rate in addition to LIBOR	2.00%
Debt instrument interest rate in addition to base rate borrowings	1.00%
Maximum Leverage Ratios
Through and including the last day of the fiscal year 2011	1.00
First day of fiscal year 2012 through and including that last day of fiscal year 2012	1.00
First day of fiscal year 2013 through and including that last day of fiscal year 2013	1.00
Thereafter	1.00
Maximum senior secured leverage ratios
Through and including the last day of the fiscal year 2012	1.00
First day of the third quarter of fiscal year 2012 through and including that last day of the second quarter of the fiscal year 2013	1.00
Thereafter	1.00

Debt instrument interest rate in addition to base rate borrowings.

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- Definition

Debt instrument interest rate in addition to LIBOR.

+ Details

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- Definition

Indebtedness under the Revolver and the Term Loan A bears interest.

+ Details

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- Definition

Maximum leverage ratio next fiscal year.

+ Details

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- Definition

Maximum leverage ratio remainder of current year.

+ Details

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- Definition

Maximum leverage ratios.

+ Details

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- Definition

Maximum leverage ratio second fiscal year after balance sheet date.

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- Definition

Maximum leverage ratio third fiscal year after balance sheet date and thereafter.

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- Definition

Maximum senior secured leverage ratio for current year.

+ Details

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- Definition

Maximum senior secured leverage ratio for next year.

+ Details

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- Definition

Maximum senior secured leverage ratios.

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- Definition

Maximum senior secured leverage ratio thereafter.

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- Definition

When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ 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

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When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ 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)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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