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Earnings Per Share (Tables) | 3 Months Ended
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Aug. 30, 2025
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Numerator and Denominator Used in the Calculation of Basic and Diluted Earnings Per Share | The table below presents a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per share attributable to MillerKnoll, Inc.:
| Three Months Ended |  |
| August 30, 2025 |  | August 31, 2024 |  |  |  |
Numerator: |  |  |  |  |  |  |
Numerator for both basic and diluted EPS, Net earnings (loss) attributable to MillerKnoll, Inc. - in millions | $ | 20.2 |  |  | $ | (1.2) |  |  |  |  |
Denominator: |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic | 68,519,141 |  |  | 70,206,373 |  |  |  |  |
Potentially dilutive shares resulting from stock plans | 675,365 |  |  | — |  |  |  |  |
Weighted-average common shares outstanding - diluted | 69,194,506 |  |  | 70,206,373 |  |  |  |  |
Earnings (loss) per share attributable to MillerKnoll, Inc. - basic | $ | 0.29 |  |  | $ | (0.02) |  |  |  |  |
Earnings (loss) per share attributable to MillerKnoll, Inc. - diluted | $ | 0.29 |  |  | $ | (0.02) |  |  |  |  |
Antidilutive equity awards not included in weighted-average common shares - diluted | 4,318,305 |  |  | 2,379,725 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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