v3.25.4
Restructuring and Integration Expense - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 29, 2025
Nov. 30, 2024
Nov. 29, 2025
Nov. 30, 2024
May 31, 2025
Jun. 01, 2024
Restructuring Cost and Reserve [Line Items]            
Restructuring expense $ 1,400,000 $ 0 $ 1,900,000 $ 0    
Knoll Integration            
Restructuring Cost and Reserve [Line Items]            
Pre-tax integration expense incurred to-date 144,400,000   144,400,000      
Future restructuring costs expected 0   0      
Restructuring expense 0 $ 0 0 28,300,000    
Knoll Integration | Exit and Disposal Activities            
Restructuring Cost and Reserve [Line Items]            
Restructuring expense       25,800,000    
Liability balance 0   0      
Knoll Integration | Other Restructuring            
Restructuring Cost and Reserve [Line Items]            
Restructuring expense       $ 2,500,000    
2026 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring expense 1,500,000   2,000,000.0      
Depreciation 1,200,000   1,700,000      
2026 Restructuring Plan | Exit and Disposal Activities            
Restructuring Cost and Reserve [Line Items]            
Restructuring expense     200,000      
Liability balance 0   0   $ 0  
2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Future restructuring costs expected 0   0   0  
Restructuring expense         14,800,000  
2025 Restructuring Plan | Exit and Disposal Activities            
Restructuring Cost and Reserve [Line Items]            
Restructuring expense     0      
Liability balance 0   0   0  
2024 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Future restructuring costs expected 0   0     $ 0
2024 Restructuring Plan | Exit and Disposal Activities            
Restructuring Cost and Reserve [Line Items]            
Restructuring expense     0      
Liability balance $ 0   $ 0   $ 0