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
	Dec. 02, 2017	Dec. 03, 2016	Dec. 02, 2017	Dec. 03, 2016
Earnings Per Share [Abstract]
Numerator for both basic and diluted EPS, net earnings attributable to Herman Miller, Inc. - in millions	$ 33.5	$ 31.7	$ 66.5	$ 68.0
Denominator for basic EPS, weighted-average common shares outstanding	59,747,932	59,954,194	59,753,271	59,942,049
Potentially dilutive shares resulting from stock plans	524,275	400,566	543,457	440,883
Denominator for diluted EPS	60,272,207	60,354,760	60,296,728	60,382,932
Antidilutive equity awards not included in weighted-average common shares - diluted	423,670	875,847	356,135	685,450