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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 26, 2012	Aug. 28, 2011
Income Tax Disclosure [Abstract]
Effective income tax rate	24.10%	27.30%
Tax position, change is reasonably possible in the next twelve months	$ 0.2

- 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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