XML 120 R85.htm IDEA: XBRL DOCUMENT
v3.20.4

Insurance Contract Liabilities and Reinsurance Assets - Summary of Potential Impact on Net Income Attributed to Shareholders Arising From Changes to Non-economic Assumptions (Detail) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
2% Adverse change in future mortality rates [Member] | Products where an increase in rates increases insurance contract liabilities [Member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |  |
Decrease in net income attributed to shareholders | $ (500) | $ (500)
2% Adverse change in future mortality rates [Member] | Products where a decrease in rates increases insurance contract liabilities [Member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |  |
Decrease in net income attributed to shareholders | (600) | (500)
5% adverse change in future morbidity rates (incidence and termination) [Member] | Long term care [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |  |
Decrease in net income attributed to shareholders | (5,700) | (5,100)
10% Adverse change in future policy termination rates [Member] | Long term care [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |  |
Decrease in net income attributed to shareholders | (2,600) | (2,400)
5% increase in future expense levels [Member] | Long term care [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |  |
Decrease in net income attributed to shareholders | $ (600) | $ (600)

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Decrease in profit loss attributable to shareholders due to policy related assumptions. + References No definition available. + Details
Name: | mfc_DecreaseInProfitLossAttributableToShareholdersDueToPolicyRelatedAssumptions
Namespace Prefix: | mfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=mfc_TwoPercentAdverseChangeInFutureMortalityRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfc_TypesOfFinanceCostOrIncomeAxis=mfc_ProductsWhereAnIncreaseInRatesIncreasesInsuranceContractLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfc_TypesOfFinanceCostOrIncomeAxis=mfc_ProductsWhereADecreaseInRatesIncreasesInsuranceContractLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=mfc_FivePercentAdverseChangeInFutureMorbidityRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfc_TypesOfFinanceCostOrIncomeAxis=mfc_LongTermCareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=mfc_TenPercentAdverseChangeInFutureTerminationRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=mfc_FivePercentAdverseIncreaseInFutureExpenseLevelsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |