XML 135 R118.htm IDEA: XBRL DOCUMENT v3.23.2
EMPLOYEE BENEFITS OBLIGATIONS - Narrative (Details)
$ in Millions
 12 Months Ended
Mar. 31, 2023
CAD ($)
funded_defined_benefit_pension_plan
shares
Mar. 31, 2022
CAD ($)
shares
Disclosure of defined benefit plans [line items]    
Number of registered funded defined benefit pension plans | funded_defined_benefit_pension_plan 3  
Number of registered funded defined benefit pension plans for employees | funded_defined_benefit_pension_plan 2  
Number of registered funded defined benefit pension plans for designated executives | funded_defined_benefit_pension_plan 1  
Letters of credit outstanding $ 56.5 $ 67.0
Post-employment benefits, expense (gain) $ 38.5 $ 40.7
Number of common shares in the pension plan assets (in shares) | shares 0 0
Average duration of the defined benefit obligation (in years) 16 years  
Change in significant assumptions (in percent) 0.25%  
Cost of sales    
Disclosure of defined benefit plans [line items]    
Post-employment benefits, expense (gain) $ 20.9 $ 17.9
Research and development expenses    
Disclosure of defined benefit plans [line items]    
Post-employment benefits, expense (gain) 5.8 7.7
Selling, general and administrative expenses    
Disclosure of defined benefit plans [line items]    
Post-employment benefits, expense (gain) 8.5 9.8
Finance expense    
Disclosure of defined benefit plans [line items]    
Post-employment benefits, expense (gain) 3.3 5.3
Capitalized pension costs    
Disclosure of defined benefit plans [line items]    
Post-employment benefits, expense (gain) $ 3.2 $ 1.7