v3.26.1
Short-Term Borrowings and Long-Term Debt - Narrative (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
Aug. 31, 2025
USD ($)
Jul. 31, 2021
USD ($)
loan
Feb. 28, 2026
USD ($)
May 30, 2026
USD ($)
May 31, 2025
USD ($)
Jun. 01, 2024
USD ($)
Apr. 30, 2025
USD ($)
Line of Credit Facility                
Interest paid         $ 62,900,000 $ 69,100,000 $ 70,600,000  
Liability related to supplier financing program         $ 1,800,000 2,000,000.0    
Revolving Credit Facility                
Line of Credit Facility                
Net leverage ratio         400.00%      
Debt instrument, covenant level, acceptable adjustment         50.00%      
Line of Credit | Syndicated Line of Credit                
Line of Credit Facility                
Borrowing capacity     $ 725,000,000.0          
MillerKnoll Receivables, LLC (the SPE)                
Line of Credit Facility                
Accounts receivable, held-for-sale         $ 42,900,000      
Private Placement Notes | Notes                
Line of Credit Facility                
Number of debt instruments | loan     2          
Term Loan A Due April 2030 | Revolving Credit Facility                
Line of Credit Facility                
Borrowing capacity               $ 725,000,000.0
Term Loan A Due April 2030 | Notes                
Line of Credit Facility                
Amount borrowed         392,500,000 400,000,000.0    
Total principal payments         7,500,000 35,000,000.0    
Term Loan A Due April 2030 | Secured Debt                
Line of Credit Facility                
Debt commitment term     5 years          
Face amount of debt     $ 400,000,000.0          
Term Loan B Due August 2032 | Revolving Credit Facility                
Line of Credit Facility                
Amount borrowed   $ 550,000,000.0            
Unamortized debt issuance costs written off   $ 7,800,000   $ 200,000        
Term Loan B Due August 2032 | Notes                
Line of Credit Facility                
Amount borrowed         547,300,000 603,100,000    
Total principal payments         $ 4,300,000 $ 6,300,000    
Term Loan B Due August 2032 | Secured Debt                
Line of Credit Facility                
Debt commitment term     7 years          
Face amount of debt     $ 625,000,000.0          
Accounts Receivable Securitization Facility Due September 2028 | Secured Debt                
Line of Credit Facility                
Debt commitment term 3 years              
Face amount of debt $ 90,000,000.0