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Insurance Contract Liabilities and Investment Contract Liabilities - Changes in Insurance Contract Liabilities and Reinsurance Assets (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Insurance contract liabilities |  |
Insurance contract liabilities, beginning balance | $ 145,773 |
Insurance contract liabilities, change in balances on in-force policies | (1,642) | $ 9,919
Insurance contract liabilities, balances arising from new policies | 3,948 | 5,004
Insurance contract liabilities, method and assumption changes | 131 | (63)
Investment contract liabilities, increase (decrease) in Insurance contract liabilities and Reinsurance assets | 2,437 | 14,860
Insurance contract liabilities, other changes | 0 | 0
Insurance contract liabilities, foreign exchange rate movements | (499) | (1,021)
Insurance contract liabilities, ending balance | 147,811 | 145,773
Reinsurance assets |  |
Reinsurance assets, beginning balance | 3,843 |
Reinsurance assets, change in balances on in-force policies | (18) | (107)
Reinsurance assets, change in balances arising from new policies | 74 | 82
Reinsurance assets, method and assumption changes | (142) | (179)
Reinsurance assets, increase (decrease) in Insurance contract liabilities and Reinsurance assets | (86) | (204)
Reinsurance assets, other changes | (109) | 0
Reinsurance assets, foreign exchange rate movements | (26) | (65)
Reinsurance assets, ending balance | 3,683 | 3,843
Net Changes In Insurance Contract Liabilities And Reinsurance Assets [Abstract] |  |
Net insurance contract liabilities and reinsurance assets, beginning balance | 141,930 |
Net change in balances on in-force policies | (1,624) | 10,026
Net balance arising from new policies | 3,874 | 4,922
Net method and assumption change | 273 | 116
Net increase (decrease) in Insurance contract liabilities and Reinsurance assets | 2,523 | 15,064
Net foreign exchange rate movement | (473) | (956)
Net Other | 109 | 0
Net insurance contract liabilities and reinsurance assets, ending balance | 144,128 | 141,930
Balances before Other policy liabilities and assets |  |
Insurance contract liabilities |  |
Insurance contract liabilities, beginning balance | 137,733 | 123,894
Insurance contract liabilities, ending balance | 139,671 | 137,733
Reinsurance assets |  |
Reinsurance assets, beginning balance | 3,126 | 3,395
Reinsurance assets, ending balance | 2,905 | 3,126
Net Changes In Insurance Contract Liabilities And Reinsurance Assets [Abstract] |  |
Net insurance contract liabilities and reinsurance assets, beginning balance | 134,607 | 120,499
Net insurance contract liabilities and reinsurance assets, ending balance | 136,766 | 134,607
Other policy liabilities and assets |  |
Insurance contract liabilities |  |
Insurance contract liabilities, beginning balance | 8,040 |
Insurance contract liabilities, ending balance | 8,140 | 8,040
Reinsurance assets |  |
Reinsurance assets, beginning balance | 717 |
Reinsurance assets, ending balance | 778 | 717
Net Changes In Insurance Contract Liabilities And Reinsurance Assets [Abstract] |  |
Net insurance contract liabilities and reinsurance assets, beginning balance | 7,323 |
Net insurance contract liabilities and reinsurance assets, ending balance | $ 7,362 | $ 7,323

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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 2021-01-01 -Paragraph IG37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_IG37_b&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph IG37 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_IG37_f&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in reinsurance assets resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Reinsurance assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in liabilities under insurance contracts and reinsurance contracts issued resulting from changes that the entity does not separately disclose in the same statement or note. [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 2021-01-01 -Paragraph IG37 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_IG37&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in reinsurance assets resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Reinsurance assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph IG20 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_IG20_a&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph IG37 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_IG37_a&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-b&anchor=para_55&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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