v3.26.1
Restructuring and Integration Expense - Schedule of Integration Expenses and Restructuring Costs by Segment (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
Total 13.5 14.8  
Knoll Integration      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses 0.0 28.3 $ 23.5
Operating Segments | North America Contract:      
Restructuring Cost and Reserve [Line Items]      
Total 12.1 9.8  
Operating Segments | International Contract:      
Restructuring Cost and Reserve [Line Items]      
Total 0.4 3.3  
Operating Segments | Global Retail:      
Restructuring Cost and Reserve [Line Items]      
Total 1.0 1.7  
Operating Segments | Knoll Integration | North America Contract:      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   24.8  
Operating Segments | Knoll Integration | International Contract:      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   3.2  
Operating Segments | Knoll Integration | Global Retail:      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   0.3  
Corporate      
Restructuring Cost and Reserve [Line Items]      
Total $ 0.0 0.0  
Corporate | Knoll Integration      
Restructuring Cost and Reserve [Line Items]      
Restructuring expenses   $ 0.0