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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Maturity (Details) - CAD ($)
$ in Thousands
Mar. 31, 2025
Mar. 31, 2024
Less than 3 months | Euros to US Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 8,092  
Average hedged rate 105.40%  
Less than 3 months | Euros to US Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 2,949 2,192
Average hedged rate 108.10% 108.40%
Less than 3 months | US Dollars to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 48,977 65,780
Average hedged rate 137.00% 135.20%
Less than 3 months | US Dollars to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 5,193 4,889
Average hedged rate 142.80% 133.90%
Less than 3 months | Euros to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 38,633 24,842
Average hedged rate 151.70% 147.90%
Less than 3 months | Euros to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount   3,513
Average hedged rate   148.00%
Less than 3 months | US Dollars to Euros | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 7,032 11,170
Average hedged rate 92.20% 90.70%
Less than 3 months | US Dollars to Euros | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 3,403 56
Average hedged rate 149.60% 91.90%
Less than 3 months | Euros to Czech Koruna | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 467 1,279
Average hedged rate 2522.00% 2452.30%
3 to 6 months | Euros to US Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 1,323  
Average hedged rate 105.80%  
3 to 6 months | Euros to US Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 2,910 3,208
Average hedged rate 108.80% 108.80%
3 to 6 months | US Dollars to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 48,847 48,247
Average hedged rate 136.90% 135.30%
3 to 6 months | US Dollars to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
3 to 6 months | Euros to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 31,342 28,130
Average hedged rate 151.50% 148.30%
3 to 6 months | Euros to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount   336
Average hedged rate   147.30%
3 to 6 months | US Dollars to Euros | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 1,122 5,224
Average hedged rate 92.60% 92.80%
3 to 6 months | US Dollars to Euros | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
3 to 6 months | Euros to Czech Koruna | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 156 877
Average hedged rate 2523.00% 2486.60%
6 to 9 months | Euros to US Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0  
Average hedged rate 0.00%  
6 to 9 months | Euros to US Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 2,795 3,317
Average hedged rate 109.20% 109.30%
6 to 9 months | US Dollars to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 41,006 42,539
Average hedged rate 138.80% 135.10%
6 to 9 months | US Dollars to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
6 to 9 months | Euros to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 34,548 12,056
Average hedged rate 151.10% 149.50%
6 to 9 months | Euros to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount   0
Average hedged rate   0.00%
6 to 9 months | US Dollars to Euros | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 2,198
Average hedged rate 0.00% 90.50%
6 to 9 months | US Dollars to Euros | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
6 to 9 months | Euros to Czech Koruna | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 584
Average hedged rate 0.00% 2495.80%
9 to 12 months | Euros to US Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0  
Average hedged rate 0.00%  
9 to 12 months | Euros to US Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 2,521 2,046
Average hedged rate 109.80% 109.80%
9 to 12 months | US Dollars to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 56,221 24,381
Average hedged rate 140.60% 136.00%
9 to 12 months | US Dollars to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
9 to 12 months | Euros to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 18,674 8,768
Average hedged rate 150.00% 151.20%
9 to 12 months | Euros to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount   0
Average hedged rate   0.00%
9 to 12 months | US Dollars to Euros | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 484 0
Average hedged rate 94.60% 0.00%
9 to 12 months | US Dollars to Euros | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
9 to 12 months | Euros to Czech Koruna | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
1 to 2 years | Euros to US Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0  
Average hedged rate 0.00%  
1 to 2 years | Euros to US Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
1 to 2 years | US Dollars to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 194,238 47,408
Average hedged rate 139.70% 136.30%
1 to 2 years | US Dollars to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
1 to 2 years | Euros to Canadian Dollars | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 32,680 20,458
Average hedged rate 149.50% 152.40%
1 to 2 years | Euros to Canadian Dollars | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount   0
Average hedged rate   0.00%
1 to 2 years | US Dollars to Euros | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 97 0
Average hedged rate 94.10% 0.00%
1 to 2 years | US Dollars to Euros | Purchase hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%
1 to 2 years | Euros to Czech Koruna | Revenue hedges    
Disclosure of detailed information about financial instruments [line items]    
Nominal amount 0 0
Average hedged rate 0.00% 0.00%