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Insurance Contract Liabilities and Investment Contract Liabilities - Total Assets Supporting Total Liabilities And Equity (Details) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | $ 197,090 | $ 180,229
Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 89,089 | 81,606
Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 6,631 | 4,787
Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 49,946 | 48,222
Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 7,516 | 7,306
Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 43,908 | 38,308
Individual participating life |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 49,448 | 43,499
Individual participating life | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 25,574 | 22,533
Individual participating life | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 4,601 | 2,899
Individual participating life | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 8,992 | 8,372
Individual participating life | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 4,950 | 4,941
Individual participating life | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 5,331 | 4,754
Individual non-participating life and health |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 52,813 | 48,007
Individual non-participating life and health | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 24,810 | 21,301
Individual non-participating life and health | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 1,611 | 1,418
Individual non-participating life and health | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 14,208 | 14,145
Individual non-participating life and health | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 2,052 | 1,790
Individual non-participating life and health | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 10,132 | 9,353
Group life and health |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 20,352 | 19,128
Group life and health | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 7,789 | 6,858
Group life and health | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 61 | 72
Group life and health | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 9,354 | 9,301
Group life and health | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 36 | 0
Group life and health | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 3,112 | 2,897
Individual annuities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 19,430 | 18,617
Individual annuities | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 11,979 | 11,711
Individual annuities | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 47 | 48
Individual annuities | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 6,219 | 6,065
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 | 1,185 | 793
Group annuities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 18,697 | 15,318
Group annuities | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 9,598 | 7,323
Group annuities | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 48 | 37
Group annuities | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 8,142 | 7,261
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 | 909 | 697
Equity and other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 36,350 | 35,660
Equity and other | Debt securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 9,339 | 11,880
Equity and other | Equity securities |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 263 | 313
Equity and other | Mortgages and loans |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 3,031 | 3,078
Equity and other | Investment properties |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | 478 | 575
Equity and other | Other |  |
Disclosure of types of insurance contracts [line items] |  |
Total general fund assets | $ 23,239 | $ 19,814

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