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Insurance Contract Liabilities and Reinsurance Assets - Summary of Change in Insurance Contract Liabilities (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure of changes in insurance contract liabilities [Line Items] |  |
Beginning balance | $ 392,275 | $ 385,554
New policies | 5,481 | 6,223
Normal in-force movement | (39,000) | 4,160
Changes in methods and assumptions | 269 | 742
Reinsurance transactions | (1,469) |
Impact of changes in foreign exchange rates | 13,849 | (4,404)
Ending balance | 371,405 | 392,275
Net actuarial liabilities [Member] |  |
Disclosure of changes in insurance contract liabilities [Line Items] |  |
Beginning balance | 332,272 | 325,408
New policies | 5,365 | 5,947
Normal in-force movement | (39,174) | 4,689
Changes in methods and assumptions | 112 | 287
Reinsurance transactions | (2,419) |
Impact of changes in foreign exchange rates | 10,439 | (4,059)
Ending balance | 306,595 | 332,272
Other insurance contract liabilities [Member] |  |
Disclosure of changes in insurance contract liabilities [Line Items] |  |
Beginning balance | 15,472 | 14,377
Normal in-force movement | 1,216 | 1,283
Changes in methods and assumptions | (192) |
Impact of changes in foreign exchange rates | 640 | (188)
Ending balance | 17,136 | 15,472
Net insurance contract liabilities [Member] |  |
Disclosure of changes in insurance contract liabilities [Line Items] |  |
Beginning balance | 347,744 | 339,785
New policies | 5,365 | 5,947
Normal in-force movement | (37,958) | 5,972
Changes in methods and assumptions | (80) | 287
Reinsurance transactions | (2,419) |
Impact of changes in foreign exchange rates | 11,079 | (4,247)
Ending balance | 323,731 | 347,744
Reinsurance assets [member] |  |
Disclosure of changes in insurance contract liabilities [Line Items] |  |
Beginning balance | 44,531 | 45,769
New policies | 116 | 276
Normal in-force movement | (1,042) | (1,812)
Changes in methods and assumptions | 349 | 455
Reinsurance transactions | 950 |
Impact of changes in foreign exchange rates | 2,770 | (157)
Ending balance | $ 47,674 | $ 44,531

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- Definition The increase in liabilities under insurance contracts and reinsurance contracts issued, resulting from additions other than through business combinations. [Refer: Liabilities under insurance contracts and reinsurance contracts issued; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph 37 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph IG37 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_IG37_b&doctype=Implementation%20Guidance&book=b -URIDate 2022-03-24 + Details
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- Definition The change in insurance liabilities resulting from the net exchange differences that arise on the translation of the financial statements into a different presentation currency, and on the translation of a foreign operation into the presentation currency. [Refer: Liabilities under insurance contracts and reinsurance contracts issued] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph 37 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph IG37 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_IG37_f&doctype=Implementation%20Guidance&book=b -URIDate 2022-03-24 + Details
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- Definition The amount of liabilities under insurance contracts and reinsurance contracts issued. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph 37 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph 37 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2022-03-24 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph IG20 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_IG20_a&doctype=Implementation%20Guidance&book=b -URIDate 2022-03-24 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph IG37 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_IG37_a&doctype=Implementation%20Guidance&book=b -URIDate 2022-03-24 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-b&anchor=para_55&doctype=Standard&book=b -URIDate 2022-03-24 + Details
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