v3.19.3.a.u2
Cover Page - shares
6 Months Ended
Nov. 30, 2019
Jan. 02, 2020
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Nov. 30, 2019  
Document Transition Report false  
Entity File Number 001-15141  
Entity Registrant Name HERMAN MILLER, 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  
Trading Symbol MLHR  
Security Exchange Name NASDAQ  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   59,062,349
Entity Central Index Key 0000066382  
Amendment Flag false  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --05-30