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Debentures (Tables)
3 Months Ended
May 31, 2020
Debt Disclosure [Abstract]  
Schedule of Debentures
The following table summarizes the change in fair value of the Debentures for the three months ended May 31, 2020:
As at
  May 31, 2020
Balance as at February 29, 2020606  
Change in fair value of the Debentures(7) 
Balance as at May 31, 2020$599  
The following table shows the impact of the changes in fair value of the Debentures for the three months ended May 31, 2020 and May 31, 2019: 
Three Months Ended
  May 31, 2020May 31, 2019
Income (charge) associated with the change in fair value from non-credit components recorded in the consolidated statements of operations $(1) $28  
Income (charge) associated with the change in fair value from instrument-specific credit components recorded in AOCL (8) 
Total decrease (increase) in the fair value of the Debentures $ $20