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Equity - Schedule of changes in restricted share units outstanding (Details) - Restricted share units [Member] - Share
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Number of other equity instruments outstanding, beginning balance 3,100,000 0
Number of other equity instruments granted 310,000 3,100,000
Number of other equity instruments exercised (1,626,000)  
Number of other equity instruments outstanding, ending balance 1,784,000 3,100,000