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v3.20.4

REVENUE - Narrative (Details) | 12 Months Ended
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Dec. 31, 2020
Service revenue | Minimum |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Expected period of recognition | 3 years
Service revenue | Maximum |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Expected period of recognition | 5 years
Wireless | Service revenue |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Typical payment period | 30 days
Wireless | Equipment revenue | Maximum |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Typical payment period | 24 months
Cable | Service revenue |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Typical payment period | 30 days
Cable | Equipment revenue | Maximum |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Typical payment period | 24 months
Media | Maximum |
Disclosure of disaggregation of revenue from contracts with customers [line items] |
Typical payment period | 30 days

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

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- Definition Revenue, Remaining Performance Obligation, Expected Period Of Recognition + References No definition available. + Details
Name: | rci_RevenueRemainingPerformanceObligationExpectedPeriodOfRecognition
Namespace Prefix: | rci_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Revenue from Contracts With Customers, Typical Payment Period + References No definition available. + Details
Name: | rci_RevenuefromContractsWithCustomersTypicalPaymentPeriod
Namespace Prefix: | rci_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_ProductsAndServicesAxis=rci_ServiceRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_SegmentsAxis=rci_WirelessSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ProductsAndServicesAxis=rci_EquipmentSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_SegmentsAxis=rci_CableSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_SegmentsAxis=rci_MediaSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |