XML 175 R150.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Employee Future Benefits - Summary of Major Categories of Plan Assets and Actual Per Cent Allocation to Each Category (Parenthetical) (Detail) - CAD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
U.S. plans [Member] |  |
Disclosure of fair value of plan assets [Line Items] |  |
Percentage of plan assets | 7.00% | 6.00%
Equity securities | $ 900,000 | $ 700,000
Canadian plans [Member] |  |
Disclosure of fair value of plan assets [Line Items] |  |
Percentage of plan assets | 0.20% | 0.30%
Equity securities | $ 0 | $ 0

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

X
- Definition The amount that instruments representing equity (rather than debt) constitute of the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 142 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_142_b&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_EquityInstrumentsAmountContributedToFairValueOfPlanAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of plan assets not quoted in active markets. + References No definition available. + Details
Name: | mfc_PercentageOfPlanAssetsNotQuotedInActiveMarkets
Namespace Prefix: | mfc_
Data Type: | num:percentItemType
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_ActuarialAssumptionsAxis=mfc_CanadianPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |