XML 33 R1.htm IDEA: XBRL DOCUMENT v3.25.2
Cover Page - USD ($)
$ in Billions
 12 Months Ended
May 31, 2025
Jul. 18, 2025
Nov. 29, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date May 31, 2025    
Current Fiscal Year End Date --05-31    
Document Transition Report false    
Entity File Number 001-15141    
Entity Registrant Name MillerKnoll, Inc.    
Entity Incorporation, State or Country Code MI    
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    
Title of 12(b) Security Common Stock, par value $0.20 per share    
Trading Symbol MLKN    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 1.7
Entity Common Stock, Shares Outstanding   67,806,605  
Documents Incorporated by Reference Certain portions of the Registrant's Proxy Statement for the 2025 Annual Meeting of Shareholders are incorporated by reference into Part III of this report.    
Entity Central Index Key 0000066382    
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY