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Financial Instrument Risk Management - Past Due and Impaired Mortgages and Loans (Details) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | $ 143,061 | $ 137,691
Mortgages |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 16,433 | 15,493
Mortgages | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 16,458 | 15,515
Mortgages | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 25 | 22
Mortgages | Not past due | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 16,427 | 15,482
Mortgages | Not past due | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages | Past due | Gross carrying value | Past due less than 90 days |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages | Past due | Gross carrying value | Later than three months [member] |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages | Past due | Allowance for losses | Past due less than 90 days |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages | Past due | Allowance for losses | Later than three months [member] |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages | Impaired | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 31 | 33
Mortgages | Impaired | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 25 | 22
Loans |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 30,389 | 27,312
Loans | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 30,439 | 27,340
Loans | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 50 | 28
Loans | Not past due | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 30,332 | 27,180
Loans | Not past due | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Loans | Past due | Gross carrying value | Past due less than 90 days |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 14 | 71
Loans | Past due | Gross carrying value | Later than three months [member] |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Loans | Past due | Allowance for losses | Past due less than 90 days |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Loans | Past due | Allowance for losses | Later than three months [member] |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Loans | Impaired | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 93 | 89
Loans | Impaired | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 50 | 28
Mortgages and loans |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 46,822 | 42,805
Mortgages and loans | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 46,897 | 42,855
Mortgages and loans | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 75 | 50
Mortgages and loans | Not past due | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 46,759 | 42,662
Mortgages and loans | Not past due | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages and loans | Past due | Gross carrying value | Past due less than 90 days |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 14 | 71
Mortgages and loans | Past due | Gross carrying value | Later than three months [member] |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages and loans | Past due | Allowance for losses | Past due less than 90 days |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages and loans | Past due | Allowance for losses | Later than three months [member] |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 0 | 0
Mortgages and loans | Impaired | Gross carrying value |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | 124 | 122
Mortgages and loans | Impaired | Allowance for losses |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |
Financial assets | $ 75 | $ 50

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 35H -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35H&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 35I -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35I&doctype=Standard -URIDate 2017-03-09 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 35M -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35M&doctype=Standard -URIDate 2017-03-09 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35N&doctype=Standard -URIDate 2017-03-09 + Details
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