v3.26.1
Revenue from Contracts with Customers - Schedule of Revenue Disaggregated by Product Type and Reportable Segment (Details) - USD ($)
$ in Millions
 12 Months Ended
May 30, 2026
May 31, 2025
Jun. 01, 2024
Disaggregation of Revenue [Line Items]      
Net sales $ 3,841.7 $ 3,669.9 $ 3,628.4
Workplace      
Disaggregation of Revenue [Line Items]      
Net sales 1,510.2 1,428.5 1,391.8
Performance Seating      
Disaggregation of Revenue [Line Items]      
Net sales 849.0 811.2 779.5
Lifestyle      
Disaggregation of Revenue [Line Items]      
Net sales 1,264.0 1,213.7 1,240.3
Other      
Disaggregation of Revenue [Line Items]      
Net sales 218.5 216.5 216.8
Operating Segments | North America Contract:      
Disaggregation of Revenue [Line Items]      
Net sales 2,061.2 1,965.2 1,922.3
Operating Segments | North America Contract: | Workplace      
Disaggregation of Revenue [Line Items]      
Net sales 1,313.7 1,227.8 1,188.3
Operating Segments | North America Contract: | Performance Seating      
Disaggregation of Revenue [Line Items]      
Net sales 346.5 332.3 325.7
Operating Segments | North America Contract: | Lifestyle      
Disaggregation of Revenue [Line Items]      
Net sales 212.1 218.5 218.2
Operating Segments | North America Contract: | Other      
Disaggregation of Revenue [Line Items]      
Net sales 188.9 186.6 190.1
Operating Segments | International Contract:      
Disaggregation of Revenue [Line Items]      
Net sales 674.0 660.0 645.6
Operating Segments | International Contract: | Workplace      
Disaggregation of Revenue [Line Items]      
Net sales 187.7 191.2 189.8
Operating Segments | International Contract: | Performance Seating      
Disaggregation of Revenue [Line Items]      
Net sales 284.3 275.6 262.5
Operating Segments | International Contract: | Lifestyle      
Disaggregation of Revenue [Line Items]      
Net sales 174.5 164.8 168.0
Operating Segments | International Contract: | Other      
Disaggregation of Revenue [Line Items]      
Net sales 27.5 28.4 25.3
Operating Segments | Global Retail:      
Disaggregation of Revenue [Line Items]      
Net sales 1,106.5 1,044.7 1,060.5
Operating Segments | Global Retail: | Workplace      
Disaggregation of Revenue [Line Items]      
Net sales 8.8 9.5 13.7
Operating Segments | Global Retail: | Performance Seating      
Disaggregation of Revenue [Line Items]      
Net sales 218.2 203.3 191.3
Operating Segments | Global Retail: | Lifestyle      
Disaggregation of Revenue [Line Items]      
Net sales 877.4 830.4 854.1
Operating Segments | Global Retail: | Other      
Disaggregation of Revenue [Line Items]      
Net sales $ 2.1 $ 1.5 $ 1.4