XML 132 R105.htm IDEA: XBRL DOCUMENT v3.20.4

Insurance Contract Liabilities and Investment Contract Liabilities - Impact of Method and Assumption Changes (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of types of insurance contracts [line items]
Net increase (decrease) before income taxes	$ 116	$ 13
Mortality / Morbidity
Disclosure of types of insurance contracts [line items]
Net increase (decrease) before income taxes	113	(347)
Policyholder behaviour
Disclosure of types of insurance contracts [line items]
Net increase (decrease) before income taxes	207	102
Expenses
Disclosure of types of insurance contracts [line items]
Net increase (decrease) before income taxes	(28)	6
Investment returns
Disclosure of types of insurance contracts [line items]
Net increase (decrease) before income taxes	(10)	6
Model enhancements and other
Disclosure of types of insurance contracts [line items]
Net increase (decrease) before income taxes	$ (166)	$ 246

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

X

- Definition

The increase (decrease) in insurance liabilities, net of reinsurance.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInInsuranceLiabilitiesNetOfReinsurance
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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