v3.25.4
Restructuring and Integration Expense - Schedule of Integration Expenses and Restructuring Costs by Segment (Details) - USD ($)
 3 Months Ended 6 Months Ended
Nov. 29, 2025
Nov. 30, 2024
Nov. 29, 2025
Nov. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Restructuring expense $ 1,400,000 $ 0 $ 1,900,000 $ 0
Total 1,500,000 0 2,000,000.0 0
Knoll Integration        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense 0 0 0 28,300,000
Operating Segments | North America Contract        
Restructuring Cost and Reserve [Line Items]        
Total 1,500,000 0 2,000,000.0 0
Operating Segments | International Contract        
Restructuring Cost and Reserve [Line Items]        
Total 0 0 0 0
Operating Segments | Global Retail        
Restructuring Cost and Reserve [Line Items]        
Total 0 0 0 0
Operating Segments | Knoll Integration | North America Contract        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense 0 0 0 24,800,000
Operating Segments | Knoll Integration | International Contract        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense 0 0 0 3,200,000
Operating Segments | Knoll Integration | Global Retail        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense 0 0 0 300,000
Corporate | Knoll Integration        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense $ 0 $ 0 $ 0 $ 0