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INTANGIBLE ASSETS AND GOODWILL - Changes in net carrying amounts of intangible assets and goodwill (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | $ 12,828 | $ 11,110
Net additions | 159 | 1,811
Amortization | (88) | (93)
Net carrying amount | 12,899 | 12,828
Customer relationships |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 33 | 47
Net additions | 12 | 2
Amortization | (11) | (16)
Net carrying amount | 34 | 33
Intangible assets excluding goodwill and acquired program rights |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 8,734 | 7,017
Net additions | 52 | 1,733
Amortization | (11) | (16)
Net carrying amount | 8,775 | 8,734
Acquired program rights |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 171 | 188
Net additions | 57 | 60
Amortization | (77) | (77)
Net carrying amount | 151 | 171
Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 3,923 | 3,905
Net additions | 50 | 18
Amortization | 0 | 0
Net carrying amount | 3,973 | 3,923
Total intangible assets |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 8,905 | 7,205
Net additions | 109 | 1,793
Amortization | (88) | (93)
Net carrying amount | 8,926 | 8,905
Spectrum licences |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 8,331 | 6,600
Net additions | 40 | 1,731
Amortization | 0 | 0
Net carrying amount | 8,371 | 8,331
Broadcast licences |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 234 | 234
Net additions | 0 | 0
Amortization | 0 | 0
Net carrying amount | 234 | 234
Brand names |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Net carrying amount | 136 | 136
Net additions | 0 | 0
Amortization | 0 | 0
Net carrying amount | $ 136 | $ 136

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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 2020-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_vi&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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