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Investments in Nonconsolidated Affiliates (Details)
$ in Millions
6 Months Ended
Aug. 31, 2018
USD ($)
Nov. 28, 2020
USD ($)
May 30, 2020
USD ($)
occurence
Jun. 01, 2019
USD ($)
Schedule of Equity Method Investments        
Number of Equity Method Investments | occurence     5  
Kvadrat Maharam Pty Limited        
Schedule of Equity Method Investments        
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity     $ 1.7 $ 1.8
Global Holdings Netherlands B.V.        
Schedule of Equity Method Investments        
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity $ 3.1   2.5  
Equity Method Investment, Temporary Difference Between Carrying Amount and Underlying Equity 2.7   2.1  
Equity Method Investment, Permanent Difference Between Carrying Amount and Underlying Equity $ 0.4   $ 0.4  
Global Holdings Netherlands B.V.        
Schedule of Equity Method Investments        
Business Acquisition, Percentage of Voting Interests Acquired 48.20%      
Payments to Acquire Businesses, Gross $ 6.1      
Forecast        
Schedule of Equity Method Investments        
Proceeds from Sale of Equity Method Investments   $ 3.0