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Cover Document
 12 Months Ended
Apr. 18, 2023
Jun. 03, 2023
Cover [Abstract]    
Document Type 8-K  
Document Period End Date Apr. 18, 2023  
Entity Registrant Name MillerKnoll, Inc.  
Entity Incorporation, State or Country Code MI  
Entity File Number 001-15141  
Entity Tax Identification Number 38-0837640  
Entity Address, Address Line One 855 East Main Avenue  
Entity Address, City or Town Zeeland  
Entity Address, State or Province MI  
Entity Address, Postal Zip Code 49464  
City Area Code 616  
Local Phone Number 654-3000  
Written Communications false  
Soliciting Material false  
Pre-commencement Tender Offer false  
Pre-commencement Issuer Tender Offer false  
Title of 12(b) Security Common Stock, par value $0.20 per share  
Trading Symbol MLKN  
Security Exchange Name NASDAQ  
Entity Emerging Growth Company false  
Entity Central Index Key 0000066382  
Amendment Flag false  
Current Fiscal Year End Date   --06-03