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Tax Matters - Narrative (Detail)	3 Months Ended
Tax Matters - Narrative (Detail)	Apr. 01, 2012	Apr. 03, 2011
Income Taxes [Line Items]
Effective tax rate for income from continuing operations	29.40%	28.70%

- 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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