XML 107 R89.htm IDEA: XBRL DOCUMENT v3.22.2
OTHER (GAINS) AND LOSSES - Narrative (Details) - CAD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disclosure of detailed information about business combination [line items]    
Impairment loss on non-financial assets, COVID-19 $ 0.0 $ 103.5
Impairment of property, plant and equipment $ 24.3 76.7
Civil Aviation    
Disclosure of detailed information about business combination [line items]    
Impairment of property, plant and equipment   46.7
Impairment of intangible assets   22.2
Inventory write-down   11.2
Defense and Security    
Disclosure of detailed information about business combination [line items]    
Impairment of intangible assets   12.6
Inventory write-down   $ 10.8