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Earnings Per Share Earnings Per Share - Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Aug. 30, 2014
Aug. 31, 2013
Earnings Per Share [Abstract]    
Numerator for both basic and diluted EPS, net earnings - in millions $ 25.2 $ 22.5
Denominator for basic EPS, weighted-average common shares outstanding 59,295,859 58,727,106
Potentially dilutive shares resulting from stock plans 615,993 609,736
Denominator for diluted EPS 59,911,852 59,336,842
Antidilutive equity awards not included in weighted-average common shares - diluted 709,206 781,558