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TAXATION - Reconciliation (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Income taxes [Abstract] |  |
Income before income taxes and non-controlling interest | $ 246,687 | $ 159,771
Combined Canadian basic federal and provincial income tax rate | 26.50% | 26.50%
Income tax expense based on combined Canadian basic federal and provincial income tax rate | $ 65,372 | $ 42,339
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |
Adjustments in respect of current income tax of previous periods | 603 | (4,269)
Non-taxable items net of non-deductible items | (14,391) | (4,649)
Unrecognized assets | 12,001 | 9,428
Income taxed at different rates and statutory rate changes | (8,843) | (10,030)
Manufacturing and processing allowance and all other items | (2,236) | (749)
At the effective income tax rate of 21% (March 31, 2023 – 20%) | 52,506 | 32,070
Income tax expense reported in the consolidated statements of income: |  |
Current tax expense | 82,421 | 69,612
Deferred tax recovery | (29,915) | (37,542)
At the effective income tax rate of 21% (March 31, 2023 – 20%) | 52,506 | 32,070
Deferred tax related to items charged or credited directly to equity and goodwill: |  |
Loss on revaluation of cash flow hedges | (2,212) | (3,495)
Opening deferred tax of acquired company | (10,963) | (6,727)
Other items recognized through equity | 6,215 | (7,428)
Income tax charged directly to equity and goodwill | $ (6,960) | $ (17,650)

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