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Goodwill and Intangible Assets - Changes in Intangible Assets (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | $ 1,779 |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | (15) | $ 0
Amortization charge for the year | (137) | (119)
Intangible assets, ending balance | 2,083 | 1,779
Gross carrying amount |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 2,661 | 2,406
Additions | 266 | 117
Acquisitions | 238 | 22
Foreign exchange rate movements | (71) | 116
Intangible assets, ending balance | 3,094 | 2,661
Accumulated amortization and impairment losses |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | (882) | (739)
Impairment loss recognised in profit or loss, intangible assets other than goodwill | (15) |
Foreign exchange rate movements | 23 | (24)
Amortization charge for the year | (137) | 119
Intangible assets, ending balance | (1,011) | (882)
Indefinite life intangible assets |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 669 |
Intangible assets, ending balance | 640 | 669
Indefinite life intangible assets | Gross carrying amount |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 673 | 625
Additions | 0 | 0
Acquisitions | 0 | 3
Foreign exchange rate movements | (27) | 45
Intangible assets, ending balance | 646 | 673
Indefinite life intangible assets | Accumulated amortization and impairment losses |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | (4) | (4)
Impairment loss recognised in profit or loss, intangible assets other than goodwill | (2) |
Foreign exchange rate movements | 0 | 0
Amortization charge for the year | 0 | 0
Intangible assets, ending balance | (6) | (4)
Finite life, Internally generated software |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 305 |
Intangible assets, ending balance | 369 | 305
Finite life, Internally generated software | Gross carrying amount |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 722 | 579
Additions | 151 | 118
Acquisitions | 0 | 0
Foreign exchange rate movements | (16) | 25
Intangible assets, ending balance | 857 | 722
Finite life, Internally generated software | Accumulated amortization and impairment losses |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | (417) | (338)
Impairment loss recognised in profit or loss, intangible assets other than goodwill | (13) |
Foreign exchange rate movements | 15 | (13)
Amortization charge for the year | (73) | 66
Intangible assets, ending balance | (488) | (417)
Finite life, Other |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 805 |
Intangible assets, ending balance | 1,074 | 805
Finite life, Other | Gross carrying amount |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | 1,266 | 1,202
Additions | 115 | (1)
Acquisitions | 238 | 19
Foreign exchange rate movements | (28) | 46
Intangible assets, ending balance | 1,591 | 1,266
Finite life, Other | Accumulated amortization and impairment losses |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Intangible assets, beginning balance | (461) | (397)
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 0 |
Foreign exchange rate movements | 8 | (11)
Amortization charge for the year | (64) | 53
Intangible assets, ending balance | $ (517) | $ (461)

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- Definition The increase in intangible assets other than goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements 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 other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_c&doctype=Standard -URIDate 2019-03-27 + Details
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