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Impairment of assets (Details) - CAD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |
Impairment of assets |  |  | $ 143,000,000 | $ 279,000,000
Impairment loss recognised in profit or loss, property, plant and equipment |  |  | $ 57,000,000 | 132,000,000
Explanation of period over which management has projected cash flows, period |  |  | 5 years |
Program and feature film rights |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |
Impairment of assets | $ 45,000,000 | $ 53,000,000 |  |
BELL MEDIA |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |
Impairment of assets | $ 86,000,000 | $ 147,000,000 |  |
Impairment loss recognised in profit or loss, goodwill |  |  | $ 0 | $ 0
Cash-generating units |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |
Discount rate | 9.50% | 10.30% | 9.50% | 10.30%
Perpetuity growth rate | 0.00% | 0.50% | 0.00% | 0.50%
Recoverable amount of asset or cash-generating unit | $ 62,000,000 | $ 109,000,000 | $ 62,000,000 | $ 109,000,000
Explanation of period over which management has projected cash flows, period |  | 5 years |  |
Indefinite-Lived Intangible Assets | BELL MEDIA |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |
Impairment of assets | $ 41,000,000 | $ 94,000,000 |  |

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- Definition The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph d -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_d_v&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph e -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_e_v&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph d -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_d_iv&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_e_iv&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 130 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 130 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_130_b&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 98 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_98_a&doctype=Standard -URIDate 2023-03-23 + Details
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