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EMPLOYEE BENEFITS OBLIGATIONS - Future Mortality Rate (Details) | Mar. 31, 2019 Employee_Age | Mar. 31, 2018 Employee_Age
--- | --- | ---
Male | Life Expectancy, at Age 45 | Canada | CPM private tables (employees) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.1 | 23.0
Male | Life Expectancy, at Age 45 | Canada | CPM private tables (designated executives) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 24.7 | 24.6
Male | Life Expectancy, at Age 45 | Canada | CPM private tables (CMAT) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.4 | 23.3
Male | Life Expectancy, at Age 45 | Netherlands | AG2016 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.8 | 23.9
Male | Life Expectancy, at Age 45 | Germany | Heubeck RT2005G |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 22.8 | 21.9
Male | Life Expectancy, at Age 45 | NORWAY | K2013 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.2 | 23.1
Male | Life Expectancy, at Age 45 | United Kingdom | S1PA |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.5 | 24.4
Male | Life Expectancy, at Age 45 | United Kingdom | CPM private tables |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.4 |
Male | Life Expectancy, at Age 65 | Canada | CPM private tables (employees) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 21.6 | 21.5
Male | Life Expectancy, at Age 65 | Canada | CPM private tables (designated executives) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.2 | 23.1
Male | Life Expectancy, at Age 65 | Canada | CPM private tables (CMAT) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 21.9 | 21.9
Male | Life Expectancy, at Age 65 | Netherlands | AG2016 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 21.7 | 21.7
Male | Life Expectancy, at Age 65 | Germany | Heubeck RT2005G |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 20.0 | 19.3
Male | Life Expectancy, at Age 65 | NORWAY | K2013 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 22.3 | 22.2
Male | Life Expectancy, at Age 65 | United Kingdom | S1PA |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 22.4 | 22.6
Male | Life Expectancy, at Age 65 | United Kingdom | CPM private tables |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 21.9 |
Female | Life Expectancy, at Age 45 | Canada | CPM private tables (employees) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.4 | 25.4
Female | Life Expectancy, at Age 45 | Canada | CPM private tables (designated executives) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 26.2 | 26.1
Female | Life Expectancy, at Age 45 | Canada | CPM private tables (CMAT) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.8 | 25.7
Female | Life Expectancy, at Age 45 | Netherlands | AG2016 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.8 | 26.3
Female | Life Expectancy, at Age 45 | Germany | Heubeck RT2005G |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.8 | 25.8
Female | Life Expectancy, at Age 45 | NORWAY | K2013 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 26.9 | 26.8
Female | Life Expectancy, at Age 45 | United Kingdom | S1PA |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.5 | 26.9
Female | Life Expectancy, at Age 45 | United Kingdom | CPM private tables |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.8 |
Female | Life Expectancy, at Age 65 | Canada | CPM private tables (employees) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 24.1 | 24.0
Female | Life Expectancy, at Age 65 | Canada | CPM private tables (designated executives) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 24.8 | 24.8
Female | Life Expectancy, at Age 65 | Canada | CPM private tables (CMAT) |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 24.4 | 24.4
Female | Life Expectancy, at Age 65 | Netherlands | AG2016 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.6 | 23.9
Female | Life Expectancy, at Age 65 | Germany | Heubeck RT2005G |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 23.6 | 23.3
Female | Life Expectancy, at Age 65 | NORWAY | K2013 |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 25.6 | 25.5
Female | Life Expectancy, at Age 65 | United Kingdom | S1PA |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 24.2 | 25.0
Female | Life Expectancy, at Age 65 | United Kingdom | CPM private tables |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Employee life expectancy | 24.4 |

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