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LEASES (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Lessee, Lease, Description [Line Items] |  |
Right-of-use assets securing lease liabilities | $ 715 | $ 591
Lease liabilities, beginning of year | 2,593 | 2,028
Net additions | 656 | 600
Lease liabilities assumed | 0 | 327
Interest expense on lease liabilities | 137 | 111
Interest payments on lease liabilities | (130) | (103)
Principal payments of lease liabilities | (478) | (370)
Lease liabilities, end of year | 2,778 | 2,593
Current liability | 587 | 504
Long-term liability | $ 2,191 | $ 2,089

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- Definition The amount of current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of interest expense on lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_InterestExpenseOnLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of non-current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Additions to Lease Liabilities + References No definition available. + Details
Name: | rci_AdditionstoLeaseLiabilities
Namespace Prefix: | rci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase Through Business Combinations, Lease Liabilities + References No definition available. + Details
Name: | rci_IncreaseThroughBusinessCombinationsLeaseLiabilities
Namespace Prefix: | rci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition [Line Items] for Lessee, Lease, Description1 [Table] + References No definition available. + Details
Name: | rci_LesseeLeaseDescription1LineItems
Namespace Prefix: | rci_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Payments of Lease Liabilities, Classified as Financing Activities, Interest Payment on Liability + References No definition available. + Details
Name: | rci_PaymentsofLeaseLiabilitiesClassifiedasFinancingActivitiesInterestPaymentonLiability
Namespace Prefix: | rci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payments of Lease Liabilities, Classified as Financing Activities, Principal Payments + References No definition available. + Details
Name: | rci_PaymentsofLeaseLiabilitiesClassifiedasFinancingActivitiesPrincipalPayments
Namespace Prefix: | rci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Right-of-use Assets Securing Lease Liabilities + References No definition available. + Details
Name: | rci_RightofuseAssetsSecuringLeaseLiabilities
Namespace Prefix: | rci_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant