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Income Taxes (Summary Of Effective Tax Rate) (Detail)	3 Months Ended		6 Months Ended
Income Taxes (Summary Of Effective Tax Rate) (Detail)	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Income Taxes [Line Items]
Effective tax rate	23.60%	28.30%	25.80%	30.20%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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