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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
	Dec. 01, 2018	Dec. 02, 2017	Dec. 01, 2018	Dec. 02, 2017
Earnings Per Share [Abstract]
Numerator for both basic and diluted EPS, Net earnings attributable to Herman Miller, Inc. - in millions	$ 39.3	$ 33.5	$ 75.1	$ 66.5
Denominator for basic EPS, weighted-average common shares outstanding	59,133,700	59,747,932	59,212,370	59,753,271
Potentially dilutive shares resulting from stock plans	308,519	524,275	399,743	543,457
Denominator for diluted EPS	59,442,219	60,272,207	59,612,113	60,296,728
Antidilutive equity awards not included in weighted-average common shares - diluted	292,699	423,670	207,868	356,135

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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