XML 109 R93.htm IDEA: XBRL DOCUMENT v3.21.1
Revenue and Segment Disclosures -Transaction price allocated to the remaining performance obligations (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Transaction price allocated to the remaining performance obligations [Line Items]      
Contract with Customer, Performance Obligation Satisfied in Previous Period $ 2 $ 1 $ 11
Revenue, Remaining Performance Obligation, Amount 324    
Less than 12 months [Domain]      
Transaction price allocated to the remaining performance obligations [Line Items]      
Revenue, Remaining Performance Obligation, Amount 239    
12 to 24 months [Domain]      
Transaction price allocated to the remaining performance obligations [Line Items]      
Revenue, Remaining Performance Obligation, Amount 62    
After 24 months [Domain]      
Transaction price allocated to the remaining performance obligations [Line Items]      
Revenue, Remaining Performance Obligation, Amount $ 23