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Total Invested Assets and Related Net Investment Income - Carrying Value and Fair Value of Financial Assets and Other Financial Liabilities (Details) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | $ 168,785 | $ 152,785
Financial assets, at fair value | 175,070 | 156,591
Invested assets | 177,912 | 161,619
Investment properties | 7,516 | 7,306
Other invested assets - non-financial assets | 1,611 | 1,528
Other financial liabilities | 1,136 | 956
Level 3 |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial liabilities, at fair value | 1,233 | 972
Cash, cash equivalents and short-term securities |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 13,527 | 9,575
Financial assets, at fair value | 13,527 | 9,575
Debt securities |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 89,089 | 81,606
Debt securities | Fair value through profit or loss |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 77,834 | 67,894
Financial assets, at fair value | 77,834 | 67,894
Debt securities | Available-for-sale |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 11,255 | 13,712
Financial assets, at fair value | 11,255 | 13,712
Equity securities |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 6,631 | 4,787
Equity securities | Fair value through profit or loss |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 6,369 | 4,474
Financial assets, at fair value | 6,369 | 4,474
Equity securities | Available-for-sale |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 262 | 313
Financial assets, at fair value | 262 | 313
Mortgages and loans |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 49,946 | 48,222
Financial assets, at fair value | 56,231 | 52,028
Derivative assets |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 2,160 | 1,548
Financial assets, at fair value | 2,160 | 1,548
Other invested assets | Fair value through profit or loss |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 3,339 | 3,016
Financial assets, at fair value | 3,339 | 3,016
Other invested assets | Available-for-sale |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 828 | 813
Financial assets, at fair value | 828 | 813
Policy loans |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 3,265 | 3,218
Financial assets, at fair value | 3,265 | 3,218
Financial assets | Level 3 |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 12,327 | 10,170
SPPI | Debt Securities, Available-for-sale |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 11,159 | 13,602
SPPI | Mortgages and loans, supporting insurance contract liabilities |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | 51,480 | 47,398
SPPI | Mortgages and loans, not supporting insurance contract liabilities |  |
Disclosure of fair value measurement of assets [line items] |  |
Financial assets | $ 4,741 | $ 4,315

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