XML 110 R75.htm IDEA: XBRL DOCUMENT
v3.20.4

Derivative and Hedging Instruments - Summary of Effects of Derivatives Not Designated in Qualifying Hedge Accounting Relationships (Detail) - Non designated [Member] - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | $ 6,498 | $ 2,649
Interest rate swaps [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | 2,423 | 1,483
Interest rate futures [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | 894 | 571
Interest rate options [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | 291 | 96
Foreign currency swaps [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | (55) | (242)
Currency rate futures [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | (47) | 88
Forward contracts [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | 3,785 | 2,815
Equity futures [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | (1,111) | (2,436)
Equity contracts [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | 322 | 277
Credit default swaps [Member] |  |
Disclosure of detailed information about hedges [Line Items] |  |
Derivative investment income (loss) | $ (4) | $ (3)

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_DisclosureOfHedgeAccountingLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivative investment income loss. + References No definition available. + Details
Name: | mfc_DerivativeInvestmentIncomeLoss
Namespace Prefix: | mfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=mfc_NonDesignated1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_InterestRateSwapContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=mfc_InterestRateFuturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=mfc_InterestRateOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_CurrencySwapContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=mfc_CurrencyRateFuturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_ForwardContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=mfc_EquityFuturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=mfc_EquityContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=mfc_CreditDefaultSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |