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Insurance and Reinsurance Contract Assets and Liabilities - Summary of Investment Income And Insurance Finance Income And Expense (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Investment related income |  | $ 16,180 | $ 15,204 |
Investment expenses |  | 1,297 | 1,221 |
Portion recognized in income (expenses), including effects of exchange rates |  | (13,894) | (6,616) |
Material reconciling items [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Investment related income |  | 16,115 | 15,964 |
Net gains (losses) on financial assets at FVTPL |  | 2,682 | (14,263) |
Unrealized gains (losses) on FVOCI assets |  | 12,230 | (55,328) |
Impairment loss on financial assets |  | (304) | (77) |
Investment expenses |  | (1,297) | (1,221) |
Interest on required surplus |  | 0 | 0 |
Total investment return |  | 29,426 | (54,925) |
Portion recognized in income (expenses) |  | 18,021 | 337 |
Portion recognized in OCI |  | 11,405 | (55,262) |
Interest accreted to insurance contracts using locked-in rate |  | (8,186) | (6,434) |
Due to changes in interest rates and other financial assumptions |  | (10,987) | 62,902 |
Changes in fair value of underlying items of direct participation contracts |  | (7,384) | 9,417 |
Effects of risk mitigation option |  | 1,267 | 2,827 |
Net foreign exchange income (expenses) |  | (80) | (95) |
Hedge accounting offset from insurance contracts issued |  | (41) | 0 |
Other |  | 237 | 216 |
Total insurance finance income (expenses) from insurance contracts issued |  | (24,992) | 68,833 |
Effect of movements in foreign exchange rates |  | (952) | (1,674) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | (25,944) | 67,159 |
Portion recognized in income (expenses), including effects of exchange rates |  | (13,894) | (6,616) |
Portion recognized in OCI, including effects of exchange rates |  | (12,050) | 73,775 |
Interest accreted to insurance contracts using locked-in rate |  | 229 | 824 |
Due to changes in interest rates and other financial assumptions |  | 570 | (10,151) |
Changes in risk of non-performance of reinsurer |  | (15) | 96 |
Other |  | (159) | 191 |
Total reinsurance finance income (expenses) from reinsurance contracts held |  | 625 | (9,040) |
Effect of movements in foreign exchange rates |  | (120) | (16) |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | 505 | (9,056) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | (734) | 309 |
Portion recognized in OCI, including effects of exchange rates |  | 1,239 | (9,365) |
Decrease (increase) in investment contract liabilities |  | (435) | (399) |
Total net investment income (loss), insurance finance income (expenses) and reinsurance finance income (expenses) |  | 3,552 | 2,779 |
Amounts recognized in income (expenses) |  | 2,958 | (6,369) |
Amounts recognized in OCI |  | 594 | 9,148 |
Material reconciling items [Member] | Cash flow hedges [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Reclassification of derivative OCI to IFIE |  | (3) | 0 |
Material reconciling items [Member] | Fair value hedges [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Reclassification of derivative income (loss) changes to IFIE |  | 185 | 0 |
Asia [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Portion recognized in income (expenses), including effects of exchange rates |  | (6,437) | (1,654) |
Canada [member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Portion recognized in income (expenses), including effects of exchange rates |  | (2,633) | (74) |
U.S. [member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Portion recognized in income (expenses), including effects of exchange rates |  | (4,844) | (4,896) |
Insurance and reinsurance contracts [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Effect of movements in foreign exchange rates |  | (9,771) | 16,061 |
Insurance and reinsurance contracts [Member] | Material reconciling items [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Investment related income |  | 13,036 | 13,991 |
Net gains (losses) on financial assets at FVTPL |  | 2,176 | (14,017) |
Unrealized gains (losses) on FVOCI assets |  | 11,212 | (46,900) |
Impairment loss on financial assets |  | (247) | (59) |
Investment expenses |  | (540) | (464) |
Interest on required surplus |  | 521 | 515 |
Total investment return |  | 26,158 | (46,934) |
Portion recognized in income (expenses) |  | 15,830 | 358 |
Portion recognized in OCI |  | 10,328 | (47,292) |
Interest accreted to insurance contracts using locked-in rate |  | (8,214) | (6,448) |
Due to changes in interest rates and other financial assumptions |  | (11,008) | 63,174 |
Changes in fair value of underlying items of direct participation contracts |  | (7,384) | 9,417 |
Effects of risk mitigation option |  | 1,267 | 2,827 |
Net foreign exchange income (expenses) |  | (80) | (95) |
Hedge accounting offset from insurance contracts issued |  | (41) | 0 |
Other |  | 237 | 218 |
Total insurance finance income (expenses) from insurance contracts issued |  | (25,041) | 69,093 |
Effect of movements in foreign exchange rates |  | (952) | (1,665) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | (25,993) | 67,428 |
Portion recognized in income (expenses), including effects of exchange rates |  | (13,930) | (6,582) |
Portion recognized in OCI, including effects of exchange rates |  | (12,063) | 74,010 |
Interest accreted to insurance contracts using locked-in rate |  | 241 | 832 |
Due to changes in interest rates and other financial assumptions |  | 598 | (10,218) |
Changes in risk of non-performance of reinsurer |  | (15) | 96 |
Other |  | (159) | 191 |
Total reinsurance finance income (expenses) from reinsurance contracts held |  | 665 | (9,099) |
Effect of movements in foreign exchange rates |  | (120) | (16) |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | 545 | (9,115) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | (719) | 322 |
Portion recognized in OCI, including effects of exchange rates |  | 1,264 | (9,437) |
Decrease (increase) in investment contract liabilities |  | (17) | (56) |
Total net investment income (loss), insurance finance income (expenses) and reinsurance finance income (expenses) |  | 693 | 11,323 |
Amounts recognized in income (expenses) |  | 1,164 | (5,958) |
Amounts recognized in OCI |  | (471) | 17,281 |
Insurance and reinsurance contracts [Member] | Material reconciling items [Member] | Cash flow hedges [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Reclassification of derivative OCI to IFIE |  | (3) | 0 |
Insurance and reinsurance contracts [Member] | Material reconciling items [Member] | Fair value hedges [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Reclassification of derivative income (loss) changes to IFIE |  | 185 | 0 |
Non Insurance [Member] | Material reconciling items [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Investment related income |  | 3,079 | 1,973 | [1]
Net gains (losses) on financial assets at FVTPL |  | 506 | (246) | [1]
Unrealized gains (losses) on FVOCI assets |  | 1,018 | (8,428) | [1]
Impairment loss on financial assets |  | (57) | (18) | [1]
Investment expenses |  | (757) | (757) | [1]
Interest on required surplus |  | (521) | (515) | [1]
Total investment return |  | 3,268 | (7,991) | [1]
Portion recognized in income (expenses) |  | 2,191 | (21) | [1]
Portion recognized in OCI |  | 1,077 | (7,970) | [1]
Interest accreted to insurance contracts using locked-in rate |  | 28 | 14 | [1]
Due to changes in interest rates and other financial assumptions |  | 21 | (272) | [1]
Changes in fair value of underlying items of direct participation contracts |  | 0 | 0 | [1]
Effects of risk mitigation option |  | 0 | 0 | [1]
Net foreign exchange income (expenses) |  | 0 | 0 | [1]
Hedge accounting offset from insurance contracts issued |  | 0 | 0 | [1]
Other |  | 0 | (2) | [1]
Total insurance finance income (expenses) from insurance contracts issued |  | 49 | (260) | [1]
Effect of movements in foreign exchange rates |  | 0 | (9) | [1]
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | 49 | (269) | [1]
Portion recognized in income (expenses), including effects of exchange rates |  | 36 | (34) | [1]
Portion recognized in OCI, including effects of exchange rates |  | 13 | (235) | [1]
Interest accreted to insurance contracts using locked-in rate |  | (12) | (8) | [1]
Due to changes in interest rates and other financial assumptions |  | (28) | 67 | [1]
Changes in risk of non-performance of reinsurer |  | 0 | 0 | [1]
Other |  | 0 | 0 | [1]
Total reinsurance finance income (expenses) from reinsurance contracts held |  | (40) | 59 | [1]
Effect of movements in foreign exchange rates |  | 0 | 0 | [1]
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | (40) | 59 | [1]
Portion recognized in income (expenses), including effects of foreign exchange rates |  | (15) | (13) | [1]
Portion recognized in OCI, including effects of exchange rates |  | (25) | 72 | [1]
Decrease (increase) in investment contract liabilities |  | (418) | (343) | [1]
Total net investment income (loss), insurance finance income (expenses) and reinsurance finance income (expenses) |  | 2,859 | (8,544) | [1]
Amounts recognized in income (expenses) |  | 1,794 | (411) | [1]
Amounts recognized in OCI |  | 1,065 | (8,133) | [1]
Non Insurance [Member] | Material reconciling items [Member] | Cash flow hedges [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Reclassification of derivative OCI to IFIE |  | 0 | 0 | [1]
Non Insurance [Member] | Material reconciling items [Member] | Fair value hedges [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Reclassification of derivative income (loss) changes to IFIE |  | 0 | 0 | [1]
Reportable segments [member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Total investment return |  | 29,426 | (54,925) |
Portion recognized in income (expenses) |  | 18,021 | 337 |
Portion recognized in OCI |  | 11,405 | (55,262) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | (25,944) | 67,159 |
Portion recognized in income (expenses), including effects of exchange rates |  | (13,894) | (6,616) |
Portion recognized in OCI, including effects of exchange rates |  | (12,050) | 73,775 |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | 505 | (9,056) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | (734) | 309 |
Portion recognized in OCI, including effects of exchange rates |  | 1,239 | (9,365) |
Reportable segments [member] | Corporate [member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Total investment return |  | 30 | (10) |
Portion recognized in income (expenses) |  | 28 | 9 |
Portion recognized in OCI |  | 2 | (19) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | 689 | 157 |
Portion recognized in income (expenses), including effects of exchange rates |  | 689 | 158 |
Portion recognized in OCI, including effects of exchange rates |  | 0 | (1) |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | (682) | (154) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | (682) | (154) |
Portion recognized in OCI, including effects of exchange rates |  | 0 | 0 |
Reportable segments [member] | Insurance and reinsurance contracts [Member] | Asia [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Total investment return |  | 11,770 | (12,778) |
Portion recognized in income (expenses) |  | 7,095 | 1,422 |
Portion recognized in OCI |  | 4,675 | (14,200) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | (11,037) | 12,878 |
Portion recognized in income (expenses), including effects of exchange rates |  | (6,436) | (1,654) |
Portion recognized in OCI, including effects of exchange rates |  | (4,601) | 14,532 |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | 12 | (189) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | (105) | (63) |
Portion recognized in OCI, including effects of exchange rates |  | 117 | (126) |
Reportable segments [member] | Insurance and reinsurance contracts [Member] | Canada [member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Total investment return |  | 5,968 | (13,299) |
Portion recognized in income (expenses) |  | 3,514 | (1,967) |
Portion recognized in OCI |  | 2,454 | (11,332) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | (5,709) | 14,512 |
Portion recognized in income (expenses), including effects of exchange rates |  | (3,315) | (219) |
Portion recognized in OCI, including effects of exchange rates |  | (2,394) | 14,731 |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | 90 | (252) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | 57 | (102) |
Portion recognized in OCI, including effects of exchange rates |  | 33 | (150) |
Reportable segments [member] | Insurance and reinsurance contracts [Member] | U.S. [member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Total investment return |  | 8,390 | (20,847) |
Portion recognized in income (expenses) |  | 5,193 | 894 |
Portion recognized in OCI |  | 3,197 | (21,741) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates |  | (9,936) | 39,881 |
Portion recognized in income (expenses), including effects of exchange rates |  | (4,868) | (4,867) |
Portion recognized in OCI, including effects of exchange rates |  | (5,068) | 44,748 |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates |  | 1,125 | (8,520) |
Portion recognized in income (expenses), including effects of foreign exchange rates |  | 11 | 641 |
Portion recognized in OCI, including effects of exchange rates |  | 1,114 | (9,161) |
Reportable segments [member] | Non Insurance [Member] |  |  |  |
Disclosure Of Information About Investment Income And Insurance Finance Income And Expenses [Line Items] |  |  |  |
Total investment return | [1] | 3,268 | (7,991) |
Portion recognized in income (expenses) | [1] | 2,191 | (21) |
Portion recognized in OCI | [1] | 1,077 | (7,970) |
Total insurance finance income (expenses) from insurance contracts issued and effect of movement in foreign exchange rates | [1] | 49 | (269) |
Portion recognized in income (expenses), including effects of exchange rates | [1] | 36 | (34) |
Portion recognized in OCI, including effects of exchange rates | [1] | 13 | (235) |
Total reinsurance finance income (expenses) from reinsurance contracts held and effect of movement in foreign exchange rates | [1] | (40) | 59 |
Portion recognized in income (expenses), including effects of foreign exchange rates | [1] | (15) | (13) |
Portion recognized in OCI, including effects of exchange rates | [1] | $ (25) | $ 72 |
[1] | Non-insurance includes consolidations and eliminations of transactions between operating segments.

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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 2023-01-01 -Paragraph 52 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2023-en-r&anchor=para_52_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 35 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_35&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Insurance finance income (expenses) from Reinsurance Contracts held Amounts recognized in income expense. + References No definition available. + Details
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- Definition Insurance finance income (expenses) from reinsurance contracts held amounts recognized in other comprehensive income. + References No definition available. + Details
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- Definition Insurance finance income (expenses) portion recognized in oci, including effects of exchange rates. + References No definition available. + Details
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- Definition Interest accreted to insurance contracts using locked-in rate from reinsurance contracts held. + References No definition available. + Details
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- Definition Interest accreted to insurance contracts using locked-in rate. + References No definition available. + Details
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- Definition Interest on required surplus. + References No definition available. + Details
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- Definition Investment expenses. + References No definition available. + Details
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- Definition Investment income portion recognized in other comprehensive income. + References No definition available. + Details
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- Definition Investment income portion recognized in profit or loss. + References No definition available. + Details
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- Definition Net foreign exchange income (expense). + References No definition available. + Details
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- Definition Net gains (losses) on financial assets at fair value through profit or loss. + References No definition available. + Details
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- Definition Net investment income (loss), insurance finance income (expense) and reinsurance finance income (expense). + References No definition available. + Details
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- Definition Net investment return. + References No definition available. + Details
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- Definition Reinsurance finance income (expense) from Reinsurance contracts held. + References No definition available. + Details
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- Definition Reinsurance finance income (expense) from reinsurance contracts held and effect of movement in foreign exchange rates. + References No definition available. + Details
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- Definition Reinsurance finance income (expenses) from reinsurance contracts held portion recognized in income (expense), including effects of exchange rates. + References No definition available. + Details
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- Definition Reinsurance finance income (expenses)from reinsurance contracts held portion recognized in other comprehensive income including effects of exchange rates. + References No definition available. + Details
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- Definition Unrealized gains (losses) on fair value through other comprehensive assets. + References No definition available. + Details
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