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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
 3 Months Ended 6 Months Ended
Nov. 28, 2015
Nov. 29, 2014
Nov. 28, 2015
Nov. 29, 2014
Earnings Per Share [Abstract]        
Numerator for both basic and diluted EPS, net earnings attributable to Herman Miller, Inc. - in millions $ 34.7 $ 27.8 $ 68.2 $ 53.0
Denominator for basic EPS, weighted-average common shares outstanding 59,891,876 59,445,577 59,812,900 59,370,718
Potentially dilutive shares resulting from stock plans 519,664 578,941 536,359 581,916
Denominator for diluted EPS 60,411,540 60,024,518 60,349,259 59,952,634
Antidilutive equity awards not included in weighted-average common shares - diluted 479,912 538,380 520,722 743,060