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Common Stock and Per Share Information - Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
May 29, 2021
Feb. 27, 2021
Nov. 28, 2020
Aug. 29, 2020
May 30, 2020
Feb. 29, 2020
Nov. 30, 2019
Aug. 31, 2019
Jun. 01, 2019
Mar. 02, 2019
Dec. 01, 2018
Sep. 01, 2018
May 29, 2021
May 30, 2020
Jun. 01, 2019
Numerator:                              
Numerator for both basic and diluted EPS, Net earnings (loss) attributable to Herman Miller, Inc. $ 7.4 $ 41.5 $ 51.3 $ 73.0 $ (173.7) $ 37.7 $ 78.6 $ 48.2 $ 46.2 $ 39.2 $ 39.3 $ 35.8 $ 173.1 $ (9.1) $ 160.5
Denominator:                              
Denominator for basic EPS, weighted-average common shares outstanding                         58,931,268 58,920,653 59,011,945
Potentially dilutive shares resulting from stock plans                         458,330 0 369,846
Denominator for diluted EPS                         59,389,598 58,920,653 59,381,791