XML 179 R150.htm IDEA: XBRL DOCUMENT v3.8.0.1

Employee Future Benefits - Summary of Key Assumptions Used by to Determine Defined Benefit Obligation and Net Benefit Cost for Defined Benefit Pension Plans and Retiree Welfare Plans (Detail)	Dec. 31, 2017	Dec. 31, 2016
U.S. plans [Member] | Pension plans [Member] | Defined benefit obligation [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	3.60%	4.10%
U.S. plans [Member] | Pension plans [Member] | Defined benefit cost [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	4.10%	4.40%
U.S. plans [Member] | Retiree welfare plans [Member] | Defined benefit obligation [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	3.60%	4.10%
Initial health care cost trend rate	8.50%	8.80%
U.S. plans [Member] | Retiree welfare plans [Member] | Defined benefit cost [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	4.10%	4.30%
Initial health care cost trend rate	8.80%	9.00%
Canadian plans [Member] | Pension plans [Member] | Defined benefit obligation [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	3.50%	3.90%
Canadian plans [Member] | Pension plans [Member] | Defined benefit cost [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	3.90%	4.10%
Canadian plans [Member] | Retiree welfare plans [Member] | Defined benefit obligation [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	3.60%	4.00%
Initial health care cost trend rate	5.90%	6.00%
Canadian plans [Member] | Retiree welfare plans [Member] | Defined benefit cost [Member]
Disclosure of defined benefit plans [Line Items]
Discount rate	4.00%	4.10%
Initial health care cost trend rate	6.00%	6.10%

X

- Definition

The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2017-01-01
-Paragraph 144
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ActuarialAssumptionOfDiscountRates
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Medical cost trend rate used as significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2017-01-01
-Paragraph 144
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ActuarialAssumptionOfMedicalCostTrendRates
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

X

- Details

Name:	ifrs-full_ActuarialAssumptionsAxis=mfc_UsPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=mfc_PensionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=mfc_DefinedBenefitObligationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=mfc_DefinedBenefitCostMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=mfc_RetireeWelfarePlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ActuarialAssumptionsAxis=mfc_CanadianPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: