Additional Cash Flow Information (Details) (USD $)	9 Months Ended
Sep. 24, 2011	Sep. 25, 2010
Additional Cash Flow Information
Income taxes paid	$ 42,120,000	$ 36,568,000
Interest paid	2,368,000	2,847,000
Acquired operating property by entering into capital leases	$ 13,038,000	$ 14,145,000

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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