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Debentures (Tables)
9 Months Ended
Nov. 30, 2022
Debt Disclosure [Abstract]  
Schedule of Debentures
The following table summarizes the change in fair value of the 1.75% Debentures for the nine months ended November 30, 2022, which also represents the total changes through earnings of items classified as Level 3 in the fair value hierarchy:
As at
  November 30, 2022
Balance as at February 28, 2022$507 
Change in fair value of the 1.75% Debentures(115)
Balance as at November 30, 2022$392 
1.75% Debenture - impact of changes in fair value
The following table shows the impact of the changes in fair value of the 1.75% Debentures for the three and nine months ended November 30, 2022 and November 30, 2021:    
Three Months EndedNine Months Ended
  November 30, 2022November 30, 2021November 30, 2022November 30, 2021
Income associated with the change in fair value from non-credit components recorded in the consolidated statements of operations $56 $110 $112 $47 
Income (charge) associated with the change in fair value from instrument-specific credit components recorded in AOCL(1)— 
Total decrease in the fair value of the 1.75% Debentures $57 $109 $115 $47