Acquisitions (Schedule Of Pro Forma Financial Information) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	9 Months Ended
Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010
Acquisitions [Abstract]
Pro forma net sales	$ 847,034	$ 774,054	$ 2,615,652	$ 2,221,667
Pro forma net income	$ 58,475	$ 54,588	$ 164,917	$ 148,262
Basic earnings per share as reported	$ 1.14	$ 1.16	$ 3.04	$ 3.26
Pro forma basic earnings per share	$ 1.41	$ 1.32	$ 3.97	$ 3.62
Diluted earnings per share as reported	$ 1.13	$ 1.14	$ 3.00	$ 3.19
Pro forma diluted earnings per share	$ 1.39	$ 1.30	$ 3.92	$ 3.55

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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

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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

Reference 8: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details