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Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 02, 2023	Sep. 03, 2022
Numerators:
Numerator for both basic and diluted EPS, Net earnings (loss) attributable to MillerKnoll, Inc.	$ 16.7	$ 25.8
Denominators:
Denominator for basic EPS, weighted-average common shares outstanding (in shares)	75,327,544	75,482,572
Potentially dilutive shares resulting from stock plans (in shares)	379,992	784,394
Denominator for diluted EPS (in shares)	75,707,536	76,266,966
Antidilutive equity awards not included in weighted-average common shares - diluted (in shares)	3,783,297	823,497

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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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