XML 25 R102.htm IDEA: XBRL DOCUMENT v3.20.1
Segment and Geographic Information - Narrative (Details) - Revenue from Contract with Customer - Customer concentration risk
12 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
First largest customer      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 18.00% 16.00% 13.00%
Second largest customer      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 14.00% 16.00% 17.00%
Third largest customer      
Revenue, Major Customer [Line Items]      
Concentration risk percentage   10.00% 10.00%
Five top customers      
Revenue, Major Customer [Line Items]      
Concentration risk percentage 50.00% 51.00% 49.00%