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INCOME TAXES - Reconciliation of Effective Tax Rate (Details) - CAD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
INCOME TAXES |  |  |  |
(Loss) earnings before income tax |  |  | $ (6,097) | $ 2,533
Canadian statutory tax rate | 8.00% | 12.00% | 24.96% | 26.74%
Statutory tax |  |  | $ (1,522) | $ 677
Add (deduct) the tax effect of: |  |  |  |
Non-taxable component of capital gains |  |  | (45) | (146)
Share-based compensation and other permanent items |  |  | 7 | 25
Assessments and adjustments |  |  | (58) | 112
Impact of income tax rates and legislative changes | $ (1,116) |  | (173) | (1,067)
Foreign tax rate differential |  |  | 3 | 83
Movement in unrecognized deferred income tax assets |  |  | 12 | (58)
Other |  |  | (2) | 8
Total income tax recovery |  |  | $ (1,778) | $ (366)
Effective tax rate |  |  | 29.20% | (14.40%)

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