XML 175 R141.htm IDEA: XBRL DOCUMENT v3.21.2
Segment Reporting - Additional Information (Details)
12 Months Ended
May 31, 2021
Segment
Customer
May 31, 2020
Customer
May 31, 2019
Customer
Segment Reporting Information [Line Items]      
Number of operating segments | Segment 5    
Number of major customers | Customer 0 0 0
Customer Concentration Risk | Revenue      
Segment Reporting Information [Line Items]      
Concentration risk, percentage 10.00% 10.00% 10.00%