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Interests in Other Entities - Narrative (Details) - CAD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 12, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Dividends received from investments accounted for using equity method, classified as investing activities |  | $ 382 | $ 29
Bottom of range |  |  |
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Interest in joint ventures and associates |  | 24.99% |
Top of range |  |  |
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Interest in joint ventures and associates |  | 50.00% |
Canadian real estate joint ventures |  |  |
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Increase in equity method investments |  | $ 29 | 1
ABSLAMC |  |  |
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Decrease in ownership of joint venture | 12.50% |  |
Proceeds from issuing shares | $ 430 |  |
Before tax gain on sale of stock | 362 |  |
After tax gain on sale of stock | $ 297 |  |
Proportion of ownership interest in joint venture | 36.50% |  |
OCI reclassified | $ 9 |  |
Joint operations |  |  |
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Investment properties and other assets |  | 2,185 | 1,802
Fair value of jointly controlled assets |  | 2,278 | 1,892
Joint ventures where entity is venturer |  |  |
Disclosure Of Joint Ventures And Associates [Line Items] |  |  |
Rental payments |  | 17 | $ 17
Future rental payments to joint ventures and associates |  | $ 182 |
Rental lease term |  | 11 years |

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