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Goodwill and Intangible Assets - Summary of Carrying Amounts of Goodwill and Intangible Assets (Parenthetical) (Detail) - CAD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | $ 4,505 | $ 4,264 | $ 4,215
Goodwill recognized |  | (255) | 5 |
Percentage of voting equity interests acquired | 51.00% |  |  |
Manulife TEDA Fund Management [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Cash transferred | $ 334 |  |  |
Fair value of joint venture interest valued | 321 |  |  |
Goodwill recognized | $ 255 |  |  |
Percentage of voting equity interests acquired | 51.00% |  |  |
Manulife TEDA Fund Management [Member] | Indefinite Life Fund Management Contracts [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Acquisitions through business combinations, intangible assets other than goodwill | $ 185 |  |  |
Manulife TEDA Fund Management [Member] | Finite Life Management Contracts [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Acquisitions through business combinations, intangible assets other than goodwill | 3 |  |  |
Distribution networks [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 881 | 888 | 806
Distribution networks [Member] | Manulife TEDA Fund Management [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Acquisitions through business combinations, intangible assets other than goodwill | $ 52 |  |  |
Customer relationships [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 643 | 687 | 738
Software [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 1,068 | 1,091 | 1,059
Other [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 52 | 49 | 52
Fund management contracts and other [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 1,048 | 788 | $ 796
US wealth and asset management [member] | Fund management contracts and other [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 273 | 273 |
Canada wealth and asset management [member] | Fund management contracts and other [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Intangible assets ending balance |  | 397 | 371 |
Gross Carrying Value [Member] | Distribution networks [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Gross carrying amount of finite life intangible assets |  | 1,517 | 1,456 |
Gross Carrying Value [Member] | Customer relationships [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Gross carrying amount of finite life intangible assets |  | 1,146 | 1,132 |
Gross Carrying Value [Member] | Software [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Gross carrying amount of finite life intangible assets |  | 2,736 | 2,484 |
Gross Carrying Value [Member] | Other [Member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Gross carrying amount of finite life intangible assets |  | $ 136 | $ 124 |

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