v3.26.1
Common Stock and Per Share Information - Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
May 30, 2026
May 31, 2025
Jun. 01, 2024
Numerator:      
Numerator for both basic and diluted EPS, Net earnings (loss) attributable to MillerKnoll, Inc. $ 91.5 $ (36.9) $ 82.3
Denominator:      
Denominator for basic EPS, weighted-average common shares outstanding (in shares) 68,736,117 68,977,267 73,291,939
Potentially dilutive shares resulting from stock plans (in shares) 585,544 0 662,817
Denominator for diluted EPS (in shares) 69,321,661 68,977,267 73,954,756
Earnings (loss) per share - basic (in dollar per share) $ 1.33 $ (0.54) $ 1.12
Earnings (loss) per share - diluted (in dollar per share) $ 1.32 $ (0.54) $ 1.11