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Financial Instrument Risk Management - Reinsurance Counterparties Exposure by Credit Rating (Details) - CAD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Disclosure of external credit grades [line items] |  |
Carrying value | $ 165,557 | $ 173,735
Total Reinsurance assets | 4,801 | 3,683
Credit risk | Gross exposure |  |
Disclosure of external credit grades [line items] |  |
Less: Negative reinsurance assets | 1,440 | 1,748
Total Reinsurance assets | 4,801 | 3,683
Credit risk | Gross exposure | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 6,241 | 5,431
Credit risk | Gross exposure | AA | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 2,409 | 2,170
Credit risk | Gross exposure | A | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 1,308 | 928
Credit risk | Gross exposure | BBB | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 133 | 139
Credit risk | Gross exposure | BB | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 2,046 | 1,861
Credit risk | Gross exposure | B | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 3 | 0
Credit risk | Gross exposure | CCC | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 237 | 197
Credit risk | Gross exposure | Not rated | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 105 | 136
Credit risk | Collateral | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 2,482 | 2,295
Credit risk | Collateral | AA | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 0 | 0
Credit risk | Collateral | A | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 30 | 28
Credit risk | Collateral | BBB | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 118 | 117
Credit risk | Collateral | BB | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 2,000 | 1,825
Credit risk | Collateral | B | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 0 | 0
Credit risk | Collateral | CCC | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 237 | 194
Credit risk | Collateral | Not rated | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 97 | 131
Credit risk | Net exposure | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 3,759 | 3,136
Credit risk | Net exposure | AA | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 2,409 | 2,170
Credit risk | Net exposure | A | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 1,278 | 900
Credit risk | Net exposure | BBB | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 15 | 22
Credit risk | Net exposure | BB | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 46 | 36
Credit risk | Net exposure | B | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 3 | 0
Credit risk | Net exposure | CCC | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | 0 | 3
Credit risk | Net exposure | Not rated | Reinsurance Assets |  |
Disclosure of external credit grades [line items] |  |
Carrying value | $ 8 | $ 5

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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 2022-03-24 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35H&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35M&doctype=Standard -URIDate 2022-03-24 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35N&doctype=Standard -URIDate 2022-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35I&doctype=Standard -URIDate 2022-03-24 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_25&doctype=Standard -URIDate 2022-03-24 + Details
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