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Derivative and Hedging Instruments - Gains and (Losses) on Derivatives and Related Hedged Items in Fair Value Hedges in Total Investment (Details) - Qualifying hedge accounting relationships - Fair value hedges - CAD ($) $ in Millions | 12 Months Ended
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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 | $ 3,646 | $ (53)
Change in value of the hedging instrument for ineffectiveness measurement | (3,346) | 185
Ineffectiveness recognized in Total investment result | 300 | 132
Carrying amount for hedged items, liabilities | 50,914 | 29,133
Accumulated fair value adjustments on hedged items, liabilities | 3,523 | (2,658)
Accumulated fair value adjustments on de-designated hedged items, liabilities | 237 | 2,642
Assets |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | (462) | 742
Change in value of the hedging instrument for ineffectiveness measurement | 333 | (778)
Ineffectiveness recognized in Total investment result | (129) | (36)
Carrying amount for hedged items, assets | 132,229 | 9,191
Accumulated fair value adjustments on hedged items, assets | (368) | 576
Accumulated fair value adjustments on de-designated hedged items, assets | (405) | (164)
Interest rate risk | Assets | Debt securities at FVOCI |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | (833) | 0
Change in value of the hedging instrument for ineffectiveness measurement | 812 | 0
Ineffectiveness recognized in Total investment result | (21) | 0
Carrying amount for hedged items, assets | 117,538 | 0
Accumulated fair value adjustments on hedged items, assets | (1) | 0
Accumulated fair value adjustments on de-designated hedged items, assets | (601) | 241
Interest rate risk | Liabilities | Insurance contract liabilities |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | 3,591 | (53)
Change in value of the hedging instrument for ineffectiveness measurement | (3,329) | 185
Ineffectiveness recognized in Total investment result | 262 | 132
Carrying amount for hedged items, liabilities | 47,747 | 29,133
Accumulated fair value adjustments on hedged items, liabilities | 3,386 | (2,658)
Accumulated fair value adjustments on de-designated hedged items, liabilities | 237 | 2,642
Foreign currency risk | Assets | Debt securities at FVOCI |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | (80) |
Change in value of the hedging instrument for ineffectiveness measurement | 80 |
Ineffectiveness recognized in Total investment result | 0 |
Carrying amount for hedged items, assets | 3,561 |
Accumulated fair value adjustments on hedged items, assets | 0 |
Accumulated fair value adjustments on de-designated hedged items, assets | 0 |
Foreign exchange and interest rate risk | Assets | Debt securities at FVOCI |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | 451 | 742
Change in value of the hedging instrument for ineffectiveness measurement | (559) | (778)
Ineffectiveness recognized in Total investment result | (108) | (36)
Carrying amount for hedged items, assets | 11,130 | 9,191
Accumulated fair value adjustments on hedged items, assets | (367) | 576
Accumulated fair value adjustments on de-designated hedged items, assets | 196 | $ (405)
Foreign exchange and interest rate risk | Liabilities | Insurance contract liabilities |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Change in value of the hedged item for ineffectiveness measurement | 55 |
Change in value of the hedging instrument for ineffectiveness measurement | (17) |
Ineffectiveness recognized in Total investment result | 38 |
Carrying amount for hedged items, liabilities | 3,167 |
Accumulated fair value adjustments on hedged items, liabilities | 137 |
Accumulated fair value adjustments on de-designated hedged items, liabilities | $ 0 |

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- Definition The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as an asset. [Refer: Hedged items [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24B -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_a_ii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as a liability. [Refer: Hedged items [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24B -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_a_ii&doctype=Standard -URIDate 2024-03-27 + Details
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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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