Financial Instrument Risk Management - Maximum Exposure to Credit Risk (Details) - CAD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Credit risk \| Loans
Disclosure of credit risk exposure [line items]
Loan commitments	$ 2,402	$ 1,890

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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