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Segregated Funds (Details) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Segregated Funds [Abstract]
Guarantees included in insurance contract liabilities	$ 1,886	$ 2,675
Reinsured guarantees	$ 530	$ 980

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- Definition

Contract Liabilities, Reinsured Guarantees

+ References

No definition available.

+ Details

Name:	mfc_ContractLiabilitiesReinsuredGuarantees
Namespace Prefix:	mfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

Guarantees Included In Insurance Contract Liabilities

+ References

No definition available.

+ Details

Name:	mfc_GuaranteesIncludedInInsuranceContractLiabilities
Namespace Prefix:	mfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Segregated Funds [Abstract]

+ References

No definition available.

+ Details

Name:	mfc_SegregatedFundsAbstract
Namespace Prefix:	mfc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration