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Insurance Contract Liabilities and Investment Contract Liabilities - Total Assets Supporting Total Liabilities And Equity (Details) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | $ 168,765 | $ 162,720
Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 74,443 | 72,619
Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 4,634 | 6,020
Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 46,822 | 42,805
Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 7,157 | 7,067
Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 35,709 | 34,209
Individual participating life |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 39,292 | 38,656
Individual participating life | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 19,624 | 18,855
Individual participating life | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 2,557 | 3,190
Individual participating life | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 7,978 | 7,458
Individual participating life | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 4,736 | 4,645
Individual participating life | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 4,397 | 4,508
Individual non-participating life and health |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 45,117 | 42,690
Individual non-participating life and health | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 18,720 | 18,560
Individual non-participating life and health | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 1,303 | 1,720
Individual non-participating life and health | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 14,398 | 12,360
Individual non-participating life and health | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 1,638 | 1,348
Individual non-participating life and health | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 9,058 | 8,702
Group life and health |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 18,440 | 17,542
Group life and health | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 6,271 | 6,003
Group life and health | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 70 | 73
Group life and health | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 9,217 | 8,799
Group life and health | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 0 | 0
Group life and health | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 2,882 | 2,667
Individual annuities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 18,695 | 18,860
Individual annuities | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 11,918 | 12,001
Individual annuities | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 49 | 50
Individual annuities | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 5,769 | 5,506
Individual annuities | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 0 | 0
Individual annuities | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 959 | 1,303
Group annuities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 13,603 | 12,499
Group annuities | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 6,448 | 6,076
Group annuities | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 35 | 45
Group annuities | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 6,298 | 5,840
Group annuities | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 0 | 0
Group annuities | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 822 | 538
Equity and other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 33,618 | 32,473
Equity and other | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 11,462 | 11,124
Equity and other | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 620 | 942
Equity and other | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 3,162 | 2,842
Equity and other | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 783 | 1,074
Equity and other | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | $ 17,591 | $ 16,491

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