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SHORT-TERM BORROWINGS - Committed Credit Facility (Details) - Committed Credit Facility - CAD ($) | 1 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2021 | Mar. 15, 2021
Disclosure of detailed information about borrowings [line items] |  |  |
Maximum borrowing capacity | $ 19,000,000,000 | $ 13,000,000,000 | $ 13,000,000,000
Repayment period (in days) | 364 days |  |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Borrowing Facilities, Maximum Borrowing Capacity + References No definition available. + Details
Name: | rci_BorrowingFacilitiesMaximumBorrowingCapacity
Namespace Prefix: | rci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Borrowings Maturity, Term + References No definition available. + Details
Name: | rci_BorrowingsMaturityTerm
Namespace Prefix: | rci_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_BorrowingsByNameAxis=rci_CommittedCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |