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Goodwill and Intangible Assets - Goodwill Acquired by Segment (Details) - Goodwill - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | $ 6,072 | $ 5,832
Acquisitions | 479 | 278
Foreign exchange rate movements | (34) | (38)
Ending balance | 6,517 | 6,072
Canada |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 2,607 | 2,607
Acquisitions | 0 | 0
Foreign exchange rate movements | 0 | 0
Ending balance | 2,607 | 2,607
U.S. |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 1,062 | 1,083
Acquisitions | 53 | 0
Foreign exchange rate movements | (7) | (21)
Ending balance | 1,108 | 1,062
Asia |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 665 | 676
Acquisitions | 3 | 0
Foreign exchange rate movements | (9) | (11)
Ending balance | 659 | 665
Asset Management |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 1,551 | 1,281
Acquisitions | 423 | 278
Foreign exchange rate movements | (15) | (8)
Ending balance | 1,959 | 1,551
Corporate |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 187 | 185
Acquisitions | 0 | 0
Foreign exchange rate movements | (3) | 2
Ending balance | $ 184 | $ 187

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- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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