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Goodwill and Intangible Assets - Goodwill Allocated to CGUs (Details) - CAD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Goodwill |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | $ 6,517 | $ 6,072 | $ 5,832
SLF Canada |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | 2,607 | 2,607 |
SLF US, Employee benefits group | Goodwill |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | 1,108 | 1,062 |
Asia | Goodwill |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | 659 | 665 |
SLF Asset Management, MFS | Goodwill |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | 483 | 486 |
SLC Management | Goodwill |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | 1,476 | 1,065 |
Corporate, UK | Goodwill |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | $ 184 | $ 187 |

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