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Derivative and Hedging Instruments - Cash Flow Hedges (Details) - Cash flow hedges - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | $ (193) | $ (50)
Change in value of the hedging instrument for ineffectiveness measurement | 193 | 50
Gains (losses) deferred in AOCI on derivatives | 193 | 50
Gains (losses) reclassified from AOCI into Total investment result | 34 | 92
Ineffectiveness recognized in Total investment result | 0 | 0
Interest rate risk | Forecasted liability issuance | Treasury locks |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | 3 | (1)
Change in value of the hedging instrument for ineffectiveness measurement | (3) | 1
Gains (losses) deferred in AOCI on derivatives | (3) | 1
Gains (losses) reclassified from AOCI into Total investment result | 0 | 0
Ineffectiveness recognized in Total investment result | 0 | 0
Foreign exchange risk | Fixed rate liabilities | Foreign currency swaps |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | (23) | 10
Change in value of the hedging instrument for ineffectiveness measurement | 23 | (10)
Gains (losses) deferred in AOCI on derivatives | 23 | (10)
Gains (losses) reclassified from AOCI into Total investment result | 26 | (8)
Ineffectiveness recognized in Total investment result | 0 | 0
Interest and foreign exchange risk | Floating rate liabilities | Foreign currency swaps |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | 32 | (23)
Change in value of the hedging instrument for ineffectiveness measurement | (32) | 23
Gains (losses) deferred in AOCI on derivatives | (32) | 23
Gains (losses) reclassified from AOCI into Total investment result | (75) | 16
Ineffectiveness recognized in Total investment result | 0 | 0
Equity risk | Stock-based compensation | Equity contracts |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | (145) | (40)
Change in value of the hedging instrument for ineffectiveness measurement | 145 | 40
Gains (losses) deferred in AOCI on derivatives | 145 | 40
Gains (losses) reclassified from AOCI into Total investment result | 66 | 3
Ineffectiveness recognized in Total investment result | 0 | 0
CPI risk | Inflation linked insurance liabilities | Interest rate swaps |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | (60) | 4
Change in value of the hedging instrument for ineffectiveness measurement | 60 | (4)
Gains (losses) deferred in AOCI on derivatives | 60 | (4)
Gains (losses) reclassified from AOCI into Total investment result | 17 | 81
Ineffectiveness recognized in Total investment result | $ 0 | $ 0

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- Definition The gain (loss) on the change in fair value of the hedged item used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24B -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_a_iv&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24B -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_b_i&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24A -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24A_c&doctype=Standard -URIDate 2024-03-27 + Details
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