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Total Invested Assets and Related Net Investment Income - Changes in Asset Fair Value and Currency Change (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | $ (2,437) | $ 6,859
Fair value changes on investment properties | 1,070 | 19
Foreign exchange gains (losses) | (418) | (18)
Fair value and foreign currency changes on assets and liabilities | (1,785) | 6,860
Other liabilities |  |
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | (2) | 0
Cash, cash equivalents and short-term securities |  |
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | (3) | (10)
Debt securities |  |
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | (3,892) | 5,209
Equity securities |  |
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | 825 | 357
Derivative assets |  |
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | 191 | 1,306
Other invested assets |  |
Disclosure of fair value measurement of assets [line items] |  |
Total change in fair value through profit or loss assets and liabilities | $ 444 | $ (3)

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- Definition The increase (decrease) in the fair value of a financial asset (or group of financial assets) designated as measured at fair value through profit or loss that is attributable to changes in the credit risk of that asset determined either: (a) as the amount of change in its fair value that is not attributable to changes in market conditions that give rise to market risk ; or (b) using an alternative method the entity believes more faithfully represents the amount of change in its fair value that is attributable to changes in the credit risk of the asset. [Refer: Credit risk [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 9 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_9_c&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition 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. + References No definition available. + Details
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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2021-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2021-en-r&anchor=para_52_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 35 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_35&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The gains (losses) recognised in profit or loss for assets measured at fair value that are attributable to the change in unrealised gains or losses relating to those assets held at the end of the reporting period. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_f&doctype=Standard -URIDate 2021-03-24 + Details
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