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Accounting and Reporting Changes - Schedule of Balance Sheet and Related Adjustments as of IFRS 17 (Parenthetical) (Detail) - Insurance contract [member] $ in Billions | Jan. 01, 2022 CAD ($)
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Non-controlling Interests [Member] |
Schedule Of Detailed Information About Balance Sheet And Related Adjustments As Of IFRS 17 [Line Items] |
Contractual service margin | $ 0.7
Shareholder Net Income [Member] |
Schedule Of Detailed Information About Balance Sheet And Related Adjustments As Of IFRS 17 [Line Items] |
Contractual service margin | $ 1.4

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- Definition The amount of the contractual service margin. [Refer: Contractual service margin [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2023-01-01 -Name IFRS -Number 17 -IssueDate 2022-03-24 -Paragraph 109 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2022-en-r&anchor=para_109&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_ContractualServiceMargin
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | mfc_ScheduleOfDetailedInformationAboutBalanceSheetAndRelatedAdjustmentsAsOfIfrs17LineItems
Namespace Prefix: | mfc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_InsuranceContractsAxis=mfc_InsuranceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_NoncontrollingInterestsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ComponentsOfEquityAxis=mfc_ShareholderNetIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |