v3.26.1
Restructuring and Integration Expense - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
May 30, 2026
May 31, 2025
Jun. 01, 2024
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses $ 11.9 $ 14.8 $ 30.8
Depreciation expense 110.3 102.6 117.5
Knoll Integration      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses 0.0 28.3 23.5
Restructuring and related cost, cost incurred to date   144.4  
Future restructuring costs expected 0.0 0.0  
Knoll Integration | Exit and Disposal Activities      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   25.8 19.4
Restructuring liability 0.0    
Knoll Integration | Other Restructuring Costs      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   2.5 4.1
2026 Restructuring Plan      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses 13.5    
Depreciation expense 4.7    
2026 Restructuring Plan | Exit and Disposal Activities      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses 0.4    
Restructuring liability 0.0 0.0  
2026 Restructuring Plan | Other Restructuring Costs      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses 6.6    
Restructuring liability 0.0 0.0  
2025 Restructuring Plan      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   14.8  
Future restructuring costs expected   0.0  
2025 Restructuring Plan | Exit and Disposal Activities      
Restructuring Cost and Reserve [Line Items]      
Restructuring liability 0.0 0.0  
2024 Restructuring Plan      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses     30.8
Future restructuring costs expected     $ 0.0
2024 Restructuring Plan | Exit and Disposal Activities      
Restructuring Cost and Reserve [Line Items]      
Restructuring liability 0.0 0.0  
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses 1.6 0.0  
Income Statement Location [Axis]: us-gaap:RestructuringCharges      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses $ 11.9 $ 14.8