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Segmented Information - Summary of Results by Geographic Location (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of geographical areas [line items] |  |
Net premium income | $ 37,853 | $ 39,065
Net investment income (loss) | (29,870) | 11,624
Other revenue | 9,164 | 11,132
Total revenue | 17,147 | 61,821
Life and health insurance [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 35,483 | 36,130
Annuities and pensions [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 2,370 | 2,935
Asia [member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 21,572 | 23,073
Net investment income (loss) | (8,468) | 5,313
Other revenue | 2,702 | 2,818
Total revenue | 15,806 | 31,204
Asia [member] | Life and health insurance [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 18,786 | 20,515
Asia [member] | Annuities and pensions [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 2,786 | 2,558
Canada [member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 10,062 | 9,249
Net investment income (loss) | (8,435) | 1,255
Other revenue | 3,246 | 3,363
Total revenue | 4,873 | 13,867
Canada [member] | Life and health insurance [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 9,615 | 8,905
Canada [member] | Annuities and pensions [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 447 | 344
U.S. [member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 5,717 | 6,373
Net investment income (loss) | (13,288) | 4,830
Other revenue | 3,217 | 4,952
Total revenue | (4,354) | 16,155
U.S. [member] | Life and health insurance [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 6,580 | 6,340
U.S. [member] | Annuities and pensions [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | (863) | 33
Other [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | 502 | 370
Net investment income (loss) | 321 | 226
Other revenue | (1) | (1)
Total revenue | 822 | 595
Other [Member] | Life and health insurance [Member] |  |
Disclosure of geographical areas [line items] |  |
Net premium income | $ 502 | $ 370

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