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Segmented Information - Segment Assets and Liabilities by Geographical Area (Details) - CAD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of operating segments [line items] |  |
Total general fund assets | $ 205,374 | $ 197,090
Investments for account of segregated fund holders | 139,996 | 125,921
Asset Management |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 10,024 | 6,957
Investments for account of segregated fund holders | 0 | 0
Asset Management | United States |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 8,203 | 5,124
Asset Management | United Kingdom |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 1,064 | 1,037
Investments for account of segregated fund holders | 0 | 0
Asset Management | Canada |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 582 | 580
Asset Management | Other countries |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 175 | 216
Corporate |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 14,187 | 13,897
Investments for account of segregated fund holders | 10,722 | 10,675
Corporate | United States |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 2,570 | 2,227
Corporate | United Kingdom |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 6,892 | 7,766
Investments for account of segregated fund holders | 10,722 | 10,675
Corporate | Canada |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | 4,533 | 3,716
Corporate | Other countries |  |
Disclosure of operating segments [line items] |  |
Total general fund assets | $ 192 | $ 188

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