XML 14 R48.htm IDEA: XBRL DOCUMENT v3.20.1
Calculation of Earnings Per Share - Additional Information (Details)
3 Months Ended 9 Months Ended
Feb. 29, 2020
Number
shares
Mar. 02, 2019
shares
Feb. 29, 2020
shares
Mar. 02, 2019
shares
Schedule Of Earning Per Share [Line Items]        
Limit of cash dividends Class B common stock (percent) 90.00%      
Common stock options anti-dilutive 1,000,000 1,084,000 943,000 918,000
Common Stock        
Schedule Of Earning Per Share [Line Items]        
Common stock shares, authorized 17,000,000   17,000,000  
Common Class B        
Schedule Of Earning Per Share [Line Items]        
Common stock shares, authorized 3,000,000   3,000,000  
Number of votes per share | Number 10