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REVENUE - Disaggregation of Revenue (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | $ 15,396 | $ 14,655
Service revenue |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 13,305 | 12,533
Equipment revenue |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 2,091 | 2,122
Operating segments | Wireless |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 9,197 | 8,768
Operating segments | Wireless | Service revenue |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 7,131 | 6,666
Operating segments | Wireless | Equipment revenue |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 2,066 | 2,102
Operating segments | Cable |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 4,071 | 4,072
Operating segments | Cable | Service revenue |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 4,046 | 4,052
Operating segments | Cable | Equipment revenue |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 25 | 20
Operating segments | Media |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 2,277 | 1,975
Corporate items and intercompany eliminations |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | $ (149) | $ (160)

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2022-03-24 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_114&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2022-03-24 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_113_a&doctype=Standard -URIDate 2022-03-24 + Details
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