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Goodwill and Intangible Assets - Summary of Carrying Amounts of Goodwill and Intangible Assets (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Goodwill Beginning balance | $ 5,713 | $ 5,884
Total intangible assets Beginning balance | 4,127 | 4,223
Goodwill Additions/ disposals | (65) |
Total intangible assets Additions/ Disposals | 145 | 303
Effect of changes in foreign exchange rates | 216 | (171)
Goodwill Ending balance | 5,864 | 5,713
Total goodwill and intangible assets Beginning balance | 9,840 | 10,107
Total goodwill and intangible assets Additions/ Disposals | 80 | 303
Amortization expense | 255 | 229
Effect of changes in foreign exchange rates | 432 | (341)
Effect of changes in foreign exchange rates - Total intangible assets | 216 | (170)
Total goodwill and intangible assets Ending balance | 10,097 | 9,840
Total intangible assets Ending balance | 4,233 | 4,127
Distribution networks [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 989 | 1,093
Total intangible assets Additions/ Disposals | (133) |
Amortization expense | 48 | 47
Effect of changes in foreign exchange rates - Total intangible assets | 60 | (57)
Total intangible assets Ending balance | 868 | 989
Customer relationships [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 899 | 969
Amortization expense | 55 | 56
Effect of changes in foreign exchange rates - Total intangible assets | 16 | (14)
Total intangible assets Ending balance | 860 | 899
Software [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 661 | 494
Total intangible assets Additions/ Disposals | 275 | 303
Amortization expense | 147 | 121
Effect of changes in foreign exchange rates - Total intangible assets | 32 | (15)
Total intangible assets Ending balance | 821 | 661
Other [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 70 | 77
Amortization expense | 5 | 5
Effect of changes in foreign exchange rates - Total intangible assets | 2 | (2)
Total intangible assets Ending balance | 67 | 70
Finite life intangible assets [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 2,619 | 2,633
Total intangible assets Additions/ Disposals | 142 | 303
Amortization expense | 255 | 229
Effect of changes in foreign exchange rates - Total intangible assets | 110 | (88)
Total intangible assets Ending balance | 2,616 | 2,619
Brand [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 753 | 805
Effect of changes in foreign exchange rates - Total intangible assets | 66 | (52)
Total intangible assets Ending balance | 819 | 753
Fund management contracts and other [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 755 | 785
Total intangible assets Additions/ Disposals | 3 |
Effect of changes in foreign exchange rates - Total intangible assets | 40 | (30)
Total intangible assets Ending balance | 798 | 755
Indefinite life intangible assets [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |
Total intangible assets Beginning balance | 1,508 | 1,590
Total intangible assets Additions/ Disposals | 3 |
Effect of changes in foreign exchange rates - Total intangible assets | 106 | (82)
Total intangible assets Ending balance | $ 1,617 | $ 1,508

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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 2018-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B67 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B67_d_ii&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
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- Definition The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + 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 2018-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_vii&doctype=Standard -URIDate 2018-03-16 + Details
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