v3.26.1
PROVISIONS (Details) - CAD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Reconciliation of changes in other provisions [abstract]    
Provisions at beginning of period $ 48.8  
Additions 40.6  
Amount used (32.9)  
Reversal of unused amounts (2.7)  
Foreign currency exchange differences 0.1  
Transfers and others 0.1  
Provisions at end of period 54.0  
Current portion 42.8 $ 34.5
Non-current portion 11.2 $ 14.3
Restoration and simulator removal    
Reconciliation of changes in other provisions [abstract]    
Provisions at beginning of period 11.0  
Additions 0.0  
Amount used (0.6)  
Reversal of unused amounts 0.0  
Foreign currency exchange differences (0.1)  
Transfers and others 0.3  
Provisions at end of period 10.6  
Current portion 0.0  
Non-current portion 10.6  
Restructuring    
Reconciliation of changes in other provisions [abstract]    
Provisions at beginning of period 7.6  
Additions 13.2  
Amount used (9.3)  
Reversal of unused amounts (0.2)  
Foreign currency exchange differences 0.1  
Transfers and others 0.0  
Provisions at end of period 11.4  
Current portion 11.4  
Non-current portion 0.0  
Legal    
Reconciliation of changes in other provisions [abstract]    
Provisions at beginning of period 4.6  
Additions 7.1  
Amount used 0.0  
Reversal of unused amounts 0.0  
Foreign currency exchange differences (0.1)  
Transfers and others 0.0  
Provisions at end of period 11.6  
Current portion 11.6  
Non-current portion 0.0  
Warranties    
Reconciliation of changes in other provisions [abstract]    
Provisions at beginning of period 15.4  
Additions 15.1  
Amount used (14.1)  
Reversal of unused amounts (2.3)  
Foreign currency exchange differences 0.0  
Transfers and others 0.0  
Provisions at end of period 14.1  
Current portion 13.5  
Non-current portion 0.6  
Onerous contracts and other    
Reconciliation of changes in other provisions [abstract]    
Provisions at beginning of period 10.2  
Additions 5.2  
Amount used (8.9)  
Reversal of unused amounts (0.2)  
Foreign currency exchange differences 0.2  
Transfers and others (0.2)  
Provisions at end of period 6.3  
Current portion 6.3  
Non-current portion $ 0.0