BCE INC (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 0001000 - Document - Document and Entity Information Network

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 http://www.bce.ca/role/DocumentAndEntityInformation
2 Implied Table Table

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3 Document And Entity Information [Abstract] Abstract bce:DocumentAndEntityInformationAbstract
4 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
5 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
6 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
7 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
8 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
9 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
10 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
11 Document Type Concept (Submission Type) For Period dei:DocumentType
12 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
13 Entity Common Stock, Shares Outstanding (in shares) Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
14 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
15 1001000 - Statement - Consolidated income statements Network

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 http://www.bce.ca/role/ConsolidatedIncomeStatements
16 Implied Table Table

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 implied:Table
17 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
18 Total operating revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
19 Operating costs Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
20 Severance, acquisition and other costs Concept (Monetary) For Period Debit bce:TerminationBenefitsExpenseAcquisitionRelatedCostsAndOtherCosts
21 Depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
22 Amortization Concept (Monetary) For Period Debit ifrs-full:AmortisationExpense
23 Finance costs Abstract ifrs-full:InterestCostsAbstract
24 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
25 Interest on post-employment benefit obligations Concept (Monetary) For Period Debit bce:PostEmploymentBenefitExpenseDefinedBenefitPlansInterest
26 Other expense Concept (Monetary) For Period Credit ifrs-full:OtherGainsLosses
27 Income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
28 Net earnings (losses) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
29 Net earnings attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
30 Common shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
31 Preferred shareholders Concept (Monetary) For Period Credit bce:ProfitLossAttributableToPreferenceEquityHoldersOfParentEntity
32 Non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
33 Net earnings (losses) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
34 Net earnings per common share Abstract ifrs-full:EarningsPerShareAbstract
35 Basic and diluted (in cad per share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
36 Average number of common shares outstanding - basic (millions) (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
37 1002000 - Statement - Consolidated statements of comprehensive income Network

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 http://www.bce.ca/role/ConsolidatedStatementsOfComprehensiveIncome
38 Implied Table Table

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 implied:Table
39 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
40 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
41 Other comprehensive income (loss), net of income taxes Abstract ifrs-full:OtherComprehensiveIncomeAbstract
42 Items that will be subsequently reclassified to net earnings Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
43 Net change in value of publicly-traded and privately-held investments, net of income taxes of nil for 2018 and 2017 Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
44 Net change in value of derivatives designated as cash flow hedges, net of income taxes of ($15) million and $21 million for 2018 and 2017, respectively (1) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
45 Items that will not be reclassified to net earnings Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
46 Actuarial gains (losses) on post-employment benefit plans, net of income taxes of ($25) million and $92 million for 2018 and 2017, respectively Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
47 Net change in value of derivatives designated as cash flow hedges, net of income taxes of ($23) million and nil for 2018 and 2017, respectively (1) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability
48 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
49 Total comprehensive (loss) income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
50 Total comprehensive income attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
51 Common shareholders Concept (Monetary) For Period Credit bce:ComprehensiveIncomeAttributabletoOrdinaryEquityHoldersofParentEntity
52 Preferred shareholders Concept (Monetary) For Period Credit bce:ComprehensiveIncomeAttributableToPreferenceEquityHoldersOfParentEntity
53 Non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
54 Total comprehensive (loss) income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
55 1002001 - Statement - Consolidated statements of comprehensive income (Parenthetical) Network

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 http://www.bce.ca/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical
56 Implied Table Table

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 implied:Table
57 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
58 Items that will be subsequently reclassified to net earnings Abstract ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract
59 Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
60 Income tax relating to cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
61 Items that will not be reclassified to net earnings Abstract ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossAbstract
62 Income tax relating to actuarial losses on post-employment benefit plans Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
63 Income tax relating to cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToChangesInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiabilityOfOtherComprehensiveIncome
64 1003000 - Statement - Consolidated statements of financial position Network

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 http://www.bce.ca/role/ConsolidatedStatementsOfFinancialPosition
65 Statement [Table] Table

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 bce:Statement1Table
66 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
67 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
68 Preferred shares Member ifrs-full:PreferenceSharesMember
69 Common shares Member ifrs-full:OrdinarySharesMember
70 Statement [Line Items] LineItems bce:Statement1LineItems
71 ASSETS Abstract ifrs-full:AssetsAbstract
72 Current assets Abstract ifrs-full:CurrentAssetsAbstract
73 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
74 Cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
75 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
76 Inventory Concept (Monetary) As Of Debit ifrs-full:Inventories
77 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
78 Contract costs Concept (Monetary) As Of Debit bce:CurrentAssetsRecognisedFromCostsToObtainOrFulfillContractsWithCustomers
79 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
80 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
81 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
82 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
83 Contract assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentContractAssets
84 Contract costs Concept (Monetary) As Of Debit bce:NoncurrentAssetsRecognisedFromCostsToObtainOrFulfillContractsWithCustomers
85 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
86 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
87 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
88 Investments in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
89 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
90 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
91 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
92 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
93 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
94 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
95 Trade payables and other liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
96 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
97 Interest payable Concept (Monetary) As Of Credit ifrs-full:CurrentInterestPayable
98 Dividends payable Concept (Monetary) As Of Credit ifrs-full:CurrentDividendPayables
99 Current tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
100 Debt due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
101 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
102 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
103 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentContractLiabilities
104 Long-term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
105 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
106 Post-employment benefit obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
107 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
108 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
109 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
110 Commitments and contingencies Concept (Monetary) As Of Credit bce:CommitmentsAndContingencies1
111 EQUITY Abstract ifrs-full:EquityAbstract
112 Shares Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
113 Contributed surplus Concept (Monetary) As Of Credit ifrs-full:SharePremium
114 Accumulated other comprehensive income (loss) Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
115 Deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
116 Total equity attributable to BCE shareholders Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
117 Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
118 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
119 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
120 1004000 - Statement - Consolidated statements of changes in equity Network

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 http://www.bce.ca/role/ConsolidatedStatementsOfChangesInEquity
121 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
122 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
123 Equity [member] Member ifrs-full:EquityMember
124 SHARES ISSUED Member ifrs-full:IssuedCapitalMember
125 CONTRI-BUTED SURPLUS Member ifrs-full:SharePremiumMember
126 ACCUM-ULATED OTHER COMPRE-HENSIVE (LOSS) INCOME Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
127 DEFICIT Member ifrs-full:RetainedEarningsMember
128 TOTAL Member ifrs-full:EquityAttributableToOwnersOfParentMember
129 NON-CONTR-OLLING INTEREST Member ifrs-full:NoncontrollingInterestsMember
130 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
131 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
132 PREFERRED SHARES Member ifrs-full:PreferenceSharesMember
133 COMMON SHARES Member ifrs-full:OrdinarySharesMember
134 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
135 Currently stated [member] Member ifrs-full:RestatedMember
136 Previously stated Member ifrs-full:PreviouslyStatedMember
137 Adoption of IFRS 9 Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
138 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
139 Beginning Balance Concept (Monetary) As Of Credit ifrs-full:Equity
140 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
141 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
142 Total comprehensive (loss) income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
143 Common shares issued under employee stock option plan Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
144 Common shares issued under employee savings plan Concept (Monetary) For Period Credit bce:IncreaseDecreaseThroughIssuanceOfSharesUnderEmployeeSavingsPlanEquity
145 Other share-based compensation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
146 Repurchase of common shares Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
147 Common shares issued for acquisitions Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAcquisitionOfSubsidiary
148 Dividends declared on BCE common and preferred shares Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
149 Dividends declared by subsidiaries to non-controlling interest Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
150 Settlement of cash flow hedges transferred to the cost basis of hedged items Concept (Monetary) For Period Debit ifrs-full:AmountRemovedFromReserveOfCashFlowHedgesAndIncludedInInitialCostOrOtherCarryingAmountOfNonfinancialAssetLiabilityOrFirmCommitmentForWhichFairValueHedgeAccountingIsApplied
151 Return of capital to non-controlling interest Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherDistributionsToOwners
152 Other Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
153 Ending Balance Concept (Monetary) As Of Credit ifrs-full:Equity
154 1005000 - Statement - Consolidated statements of cash flows Network

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 http://www.bce.ca/role/ConsolidatedStatementsOfCashFlows
155 Implied Table Table

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156 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
157 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
158 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
159 Adjustments to reconcile net earnings to cash flows from operating activities Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
160 Severance, acquisition and other costs Concept (Monetary) For Period Debit bce:AdjustmentsForTerminationBenefitsExpenseAcquisitionRelatedCostsAndOtherCosts
161 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
162 Post-employment benefit plans cost Concept (Monetary) For Period Debit bce:AdjustmentsForPostEmployeeBenefitExpense
163 Post-employment benefit plans cost Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
164 Net interest expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForInterestExpense
165 Losses on investments Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
166 Income taxes Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncomeTaxExpense
167 Contributions to post-employment benefit plans Concept (Monetary) For Period Credit bce:PaymentsToAndOnBehalfOfEmployeesPostEmploymentBenefitPlans
168 Payments under other post-employment benefit plans Concept (Monetary) For Period Credit bce:PaymentsToAndOnBehalfOfEmployeesOtherPostEmploymentBenefitPlans
169 Severance and other costs paid Concept (Monetary) For Period Credit bce:PaymentsForTerminationAndOtherCosts
170 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
171 Income taxes paid (net of refunds) Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
172 Acquisition and other costs paid Concept (Monetary) For Period Credit bce:PaymentsForAcquisitionAndOtherCosts
173 Net change in operating assets and liabilities Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
174 Cash flows from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
175 Cash flows used in investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
176 Capital expenditures Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
177 Business acquisitions Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
178 Disposition of intangibles and other assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
179 Decrease in investments Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities
180 Acquisition of spectrum licenses Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
181 Other investing activities Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
182 Cash flows used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
183 Cash flows used in financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
184 (Decrease) increase in notes payable Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings
185 Issue of long-term debt Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
186 Repayment of long-term debt Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
187 Issue of common shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
188 Purchase of shares for settlement of share-based payments Concept (Monetary) For Period Credit ifrs-full:PaymentsToAcquireOrRedeemEntitysShares
189 Repurchase of common shares Concept (Monetary) For Period Credit bce:PaymentsForRepurchaseOfCommonStock1
190 Cash dividends paid on common shares Concept (Monetary) For Period Credit bce:DividendsPaidCommonStockClassifiedAsFinancingActivities
191 Cash dividends paid on preferred shares Concept (Monetary) For Period Credit bce:DividendsPaidPreferredStockClassifiedAsFinancingActivities
192 Cash dividends paid by subsidiaries to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
193 Return of capital to non-controlling interest Concept (Monetary) For Period Credit bce:PaymentstoNoncontrollingInterestsReturnofCapital
194 Other financing activities Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
195 Cash flows used in financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
196 Net decrease in cash Concept (Monetary) For Period Debit bce:IncreaseDecreaseInCash
197 Cash at beginning of year Concept (Monetary) As Of Debit ifrs-full:Cash
198 Cash at end of year Concept (Monetary) As Of Debit ifrs-full:Cash
199 Net decrease in cash equivalents Concept (Monetary) For Period Debit bce:IncreaseDecreaseInCashEquivalents
200 Cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
201 Cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
202 2101100 - Disclosure - Corporate information Network

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 http://www.bce.ca/role/CorporateInformation
203 Implied Table Table

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204 Corporate Information And Statement Of IFRS Compliance [Abstract] Abstract bce:CorporateInformationAndStatementOfIFRSComplianceAbstract
205 Corporate information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNotesAndOtherExplanatoryInformationExplanatory
206 2102100 - Disclosure - Significant accounting policies Network

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207 Implied Table Table

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208 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract bce:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
209 Significant accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
210 2103100 - Disclosure - Business acquisitions and dispositions Network

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 http://www.bce.ca/role/BusinessAcquisitionsAndDispositions
211 Implied Table Table

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212 Business Combinations1 [Abstract] Abstract bce:BusinessCombinations1Abstract
213 Business acquisitions and dispositions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBusinessCombinationsExplanatory
214 2104100 - Disclosure - Segmented information Network

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 http://www.bce.ca/role/SegmentedInformation
215 Implied Table Table

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216 Operating Segments [Abstract] Abstract bce:OperatingSegmentsAbstract
217 Segmented information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
218 2105100 - Disclosure - Operating costs Network

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 http://www.bce.ca/role/OperatingCosts
219 Implied Table Table

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220 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
221 Operating costs Concept (Text Block (HTML)) For Period bce:DisclosureofOperatingCostsTextBlock
222 2106100 - Disclosure - Severance, acquisition and other costs Network

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 http://www.bce.ca/role/SeveranceAcquisitionAndOtherCosts
223 Implied Table Table

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224 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
225 Severance, acquisition and other costs Concept (Text Block (HTML)) For Period bce:DisclosureOfSeveranceAcquisitionAndOtherCostsTextBlock
226 2107100 - Disclosure - Interest expense Network

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 http://www.bce.ca/role/InterestExpense
227 Implied Table Table

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228 Borrowing costs [abstract] Abstract ifrs-full:BorrowingCostsAbstract
229 Interest expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestExpenseExplanatory
230 2108100 - Disclosure - Other expense Network

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 http://www.bce.ca/role/OtherExpense
231 Implied Table Table

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232 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
233 Other expense Concept (Text Block (HTML)) For Period bce:DisclosureOfOtherGainsLossesTextBlock
234 2109100 - Disclosure - Income taxes Network

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 http://www.bce.ca/role/IncomeTaxes
235 Implied Table Table

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236 Income Taxes [Abstract] Abstract bce:IncomeTaxesAbstract
237 Income taxes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
238 2110100 - Disclosure - Earnings per share Network

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 http://www.bce.ca/role/EarningsPerShare
239 Implied Table Table

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240 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
241 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
242 2111100 - Disclosure - Trade and other receivables Network

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 http://www.bce.ca/role/TradeAndOtherReceivables
243 Implied Table Table

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244 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
245 Trade and other receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
246 2112100 - Disclosure - Inventory Network

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 http://www.bce.ca/role/Inventory
247 Implied Table Table

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248 Inventories [Abstract] Abstract bce:InventoriesAbstract
249 Inventory Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
250 2113100 - Disclosure - Contracts assets and liabilities Network

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 http://www.bce.ca/role/ContractsAssetsAndLiabilities
251 Implied Table Table

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252 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
253 Contracts assets and liabilities, contract costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
254 2114100 - Disclosure - Contract costs Network

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 http://www.bce.ca/role/ContractCosts
255 Implied Table Table

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256 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
257 Contracts assets and liabilities, contract costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
258 2115100 - Disclosure - Property, plant and equipment Network

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 http://www.bce.ca/role/PropertyPlantAndEquipment
259 Implied Table Table

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260 Property, plant and equipment [abstract] Abstract ifrs-full:PropertyPlantAndEquipmentAbstract
261 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
262 2116100 - Disclosure - Intangible assets Network

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 http://www.bce.ca/role/IntangibleAssets
263 Implied Table Table

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264 Intangible Assets [Abstract] Abstract bce:IntangibleAssetsAbstract
265 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
266 2117100 - Disclosure - Investments in associates and joint ventures Network

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 http://www.bce.ca/role/InvestmentsInAssociatesAndJointVentures
267 Implied Table Table

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268 Interests in Other Entities [Abstract] Abstract bce:InterestsinOtherEntitiesAbstract
269 Investments in associates and joint ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory
270 2118100 - Disclosure - Other non-current assets Network

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 http://www.bce.ca/role/OtherNonCurrentAssets
271 Implied Table Table

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272 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
273 Other non-current assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory
274 2119100 - Disclosure - Goodwill Network

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 http://www.bce.ca/role/Goodwill
275 Implied Table Table

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276 Intangible Assets [Abstract] Abstract bce:IntangibleAssetsAbstract
277 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoodwillExplanatory
278 2120100 - Disclosure - Trade payables and other liabilities Network

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 http://www.bce.ca/role/TradePayablesAndOtherLiabilities
279 Implied Table Table

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280 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
281 Trade payables and other liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
282 2121100 - Disclosure - Debt due within one year Network

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 http://www.bce.ca/role/DebtDueWithinOneYear
283 Implied Table Table

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284 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
285 Debt due within one year Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
286 2122100 - Disclosure - Long-term debt Network

*

*

 http://www.bce.ca/role/LongTermDebt
287 Implied Table Table

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 implied:Table
288 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
289 Long-term debt Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
290 2123100 - Disclosure - Provisions Network

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*

 http://www.bce.ca/role/Provisions
291 Implied Table Table

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292 Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Abstract bce:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
293 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
294 2124100 - Disclosure - Post-employee benefit plans Network

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 http://www.bce.ca/role/PostEmployeeBenefitPlans
295 Implied Table Table

*

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 implied:Table
296 Employee Benefits [Abstract] Abstract bce:EmployeeBenefitsAbstract
297 Post-employment benefit plans Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
298 2125100 - Disclosure - Other non-current liabilities Network

*

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 http://www.bce.ca/role/OtherNonCurrentLiabilities
299 Implied Table Table

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 implied:Table
300 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
301 Other non-current liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory
302 2126100 - Disclosure - Financial and capital management Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagement
303 Implied Table Table

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 implied:Table
304 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
305 Financial and capital management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
306 2127100 - Disclosure - Share capital Network

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 http://www.bce.ca/role/ShareCapital
307 Implied Table Table

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308 Disclosure Of Share Capital, Reserves And Other Equity Interest [Abstract] Abstract bce:DisclosureOfShareCapitalReservesAndOtherEquityInterestAbstract
309 Share capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
310 2128100 - Disclosure - Share-based payments Network

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*

 http://www.bce.ca/role/ShareBasedPayments
311 Implied Table Table

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312 Share-based Payment Arrangements [Abstract] Abstract bce:SharebasedPaymentArrangementsAbstract
313 Share-based payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
314 2129100 - Disclosure - Additional cash flow information Network

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 http://www.bce.ca/role/AdditionalCashFlowInformation
315 Implied Table Table

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 implied:Table
316 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
317 Additional cash flow information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
318 2130100 - Disclosure - Remaining performance obligations Network

*

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 http://www.bce.ca/role/RemainingPerformanceObligations
319 Implied Table Table

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320 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
321 Remaining performance obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
322 2131100 - Disclosure - Commitments and contingencies Network

*

*

 http://www.bce.ca/role/CommitmentsAndContingencies
323 Implied Table Table

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324 Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Abstract bce:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
325 Commitments and contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
326 2132100 - Disclosure - Related party transactions Network

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 http://www.bce.ca/role/RelatedPartyTransactions
327 Implied Table Table

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 implied:Table
328 Related Party [Abstract] Abstract bce:RelatedPartyAbstract
329 Related party transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
330 2133100 - Disclosure - Significant partly-owned subsidiaries Network

*

*

 http://www.bce.ca/role/SignificantPartlyOwnedSubsidiaries
331 Implied Table Table

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332 Interest In Other Entities [Abstract] Abstract bce:InterestInOtherEntitiesAbstract
333 Significant partly-owned subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
334 2188100 - Disclosure - Adoption of IFRS 15 Network

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 http://www.bce.ca/role/AdoptionOfIfrs15
335 Implied Table Table

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336 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
337 Adoption of IFRS 15 Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
338 2202201 - Disclosure - Significant accounting policies (Policies) Network

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*

 http://www.bce.ca/role/SignificantAccountingPoliciesPolicies
339 Implied Table Table

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341 Basis of presentation Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfMeasurementBasesUsedInPreparingFinancialStatements
342 Basis of consolidation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
343 Revenue from contracts with customers Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
344 Share-based payments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
345 Income and other taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
346 Cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
347 Securitization of trade receivables Concept (Text Block (HTML)) For Period bce:DescriptionOfAccountingPolicyForSecuritizationOfTradeReceivablesPolicyTextBlock
348 Inventory Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
349 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
350 Borrowing costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
351 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
352 Asset retirement obligations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDecommissioningRestorationAndRehabilitationProvisionsExplanatory
353 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
354 Amortization Concept (Text Block (HTML)) For Period bce:DescriptionofAccountingPolicyforAmortisationExpensePolicyTextBlock
355 Depreciation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory
356 Investment in associates and joint arrangements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
357 Business combinations and goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory
358 Impairment of non-financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
359 Trade and other receivables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
360 Portfolio investments in equity securities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory
361 Other financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
362 Derivative financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
363 Post-employment benefit plans Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
364 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
365 Estimates and key judgements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
366 Change in accounting estimate Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfNatureAndAmountOfChangeInAccountingEstimate
367 Adoption of new or amended accounting standards Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfChangesInAccountingPoliciesExplanatory
368 Future changes to accounting standards Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
369 2302302 - Disclosure - Significant accounting policies (Tables) Network

*

*

 http://www.bce.ca/role/SignificantAccountingPoliciesTables
370 Implied Table Table

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372 Disclosure of detailed information about property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
373 Disclosure of detailed information about intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
374 Disclosure of adoption of amended accounting standards Concept (Text Block (HTML)) For Period bce:DisclosureOfChangesInAccountingPoliciesTableTextBlock
375 Disclosure of future changes to accounting standards Concept (Text Block (HTML)) For Period bce:DisclosureOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsTableTextBlock
376 2303301 - Disclosure - Business acquisitions and dispositions (Tables) Network

*

*

 http://www.bce.ca/role/BusinessAcquisitionsAndDispositionsTables
377 Implied Table Table

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378 Business Combinations1 [Abstract] Abstract bce:BusinessCombinations1Abstract
379 Summary of fair value of consideration paid and fair value assigned to each major class of assets and liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
380 2304301 - Disclosure - Segmented information (Tables) Network

*

*

 http://www.bce.ca/role/SegmentedInformationTables
381 Implied Table Table

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382 Operating Segments [Abstract] Abstract bce:OperatingSegmentsAbstract
383 Segmented information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
384 Revenues by services and products Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory
385 2305301 - Disclosure - Operating costs (Tables) Network

*

*

 http://www.bce.ca/role/OperatingCostsTables
386 Implied Table Table

*

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 implied:Table
387 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
388 Disclosure of operating costs Concept (Text Block (HTML)) For Period bce:DisclosureOfOperatingCostsExplanatoryTableTextBlock
389 2306301 - Disclosure - Severance, acquisition and other costs (Tables) Network

*

*

 http://www.bce.ca/role/SeveranceAcquisitionAndOtherCostsTables
390 Implied Table Table

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 implied:Table
391 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
392 Disclosure of severance, acquisition and other costs Concept (Text Block (HTML)) For Period bce:DisclosureOfSeveranceAcquisitionAndOtherCostsTableTextBlock
393 2307301 - Disclosure - Interest expense (Tables) Network

*

*

 http://www.bce.ca/role/InterestExpenseTables
394 Implied Table Table

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 implied:Table
395 Borrowing costs [abstract] Abstract ifrs-full:BorrowingCostsAbstract
396 Disclosure of interest expense Concept (Text Block (HTML)) For Period bce:DisclosureOfInterestExpenseExplanatoryTableTextBlock
397 2308301 - Disclosure - Other expense (Tables) Network

*

*

 http://www.bce.ca/role/OtherExpenseTables
398 Implied Table Table

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 implied:Table
399 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
400 Schedule of other expense Concept (Text Block (HTML)) For Period bce:DisclosureOfOtherGainsLossesExplanatoryTableTextBlock
401 2309301 - Disclosure - Income taxes (Tables) Network

*

*

 http://www.bce.ca/role/IncomeTaxesTables
402 Implied Table Table

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403 Income Taxes [Abstract] Abstract bce:IncomeTaxesAbstract
404 Significant components of income taxes deducted from net earnings Concept (Text Block (HTML)) For Period bce:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock
405 Reconciliation of reported income taxes in the income statement Concept (Text Block (HTML)) For Period bce:DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock
406 Disclosure of current and deferred taxes Concept (Text Block (HTML)) For Period bce:DisclosureOfCurrentAndDeferredTaxRelatingToItemsCreditedChargedDirectlyToEquityTableTextBlock
407 Deferred taxes resulting from temporary differences Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
408 2310301 - Disclosure - Earnings per share (Tables) Network

*

*

 http://www.bce.ca/role/EarningsPerShareTables
409 Implied Table Table

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410 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
411 Schedule of components used in calculation of basic and diluted earnings per share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
412 2311301 - Disclosure - Trade and other receivables (Tables) Network

*

*

 http://www.bce.ca/role/TradeAndOtherReceivablesTables
413 Implied Table Table

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 implied:Table
414 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
415 Schedule of trade and other receivables Concept (Text Block (HTML)) For Period bce:TradeAndOtherReceivablesExplanatoryTableTextBlock
416 2312301 - Disclosure - Inventory (Tables) Network

*

*

 http://www.bce.ca/role/InventoryTables
417 Implied Table Table

*

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 implied:Table
418 Inventories [Abstract] Abstract bce:InventoriesAbstract
419 Schedule of Inventory Concept (Text Block (HTML)) For Period bce:DisclosureOfInventoriesTableTextBlock
420 2313301 - Disclosure - Contracts assets and liabilities (Tables) Network

*

*

 http://www.bce.ca/role/ContractsAssetsAndLiabilitiesTables
421 Implied Table Table

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422 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
423 Contract assets and contract liabilities Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfSignificantChangesInContractAssetsAndContractLiabilitiesExplanatory
424 2314301 - Disclosure - Contract costs (Tables) Network

*

*

 http://www.bce.ca/role/ContractCostsTables
425 Implied Table Table

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 implied:Table
426 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
427 Contract costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomersExplanatory
428 2315301 - Disclosure - Property, plant and equipment (Tables) Network

*

*

 http://www.bce.ca/role/PropertyPlantAndEquipmentTables
429 Implied Table Table

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430 Property, plant and equipment [abstract] Abstract ifrs-full:PropertyPlantAndEquipmentAbstract
431 Schedule of property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
432 Additions to and net carrying amount of assets under finance leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRecognisedFinanceLeaseAsAssetsByLesseeExplanatory
433 Reconciliation of minimum future lease payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
434 2316301 - Disclosure - Intangible assets (Tables) Network

*

*

 http://www.bce.ca/role/IntangibleAssetsTables
435 Implied Table Table

*

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 implied:Table
436 Intangible Assets [Abstract] Abstract bce:IntangibleAssetsAbstract
437 Disclosure of reconciliation of changes in intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
438 2317301 - Disclosure - Investments in associates and joint ventures (Tables) Network

*

*

 http://www.bce.ca/role/InvestmentsInAssociatesAndJointVenturesTables
439 Implied Table Table

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440 Interests in Other Entities [Abstract] Abstract bce:InterestsinOtherEntitiesAbstract
441 Disclosure of interests in associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
442 Disclosure of interests in joint arrangements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory
443 2318301 - Disclosure - Other non-current assets (Tables) Network

*

*

 http://www.bce.ca/role/OtherNonCurrentAssetsTables
444 Implied Table Table

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446 Disclosure of other non-current assets Concept (Text Block (HTML)) For Period bce:DisclosureOfOtherNonCurrentAssetsTableTextBlock
447 2319301 - Disclosure - Goodwill (Tables) Network

*

*

 http://www.bce.ca/role/GoodwillTables
448 Implied Table Table

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449 Intangible Assets [Abstract] Abstract bce:IntangibleAssetsAbstract
450 Changes in Carrying Amounts of Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
451 Key Assumptions Used to Estimate the Recoverable Amounts Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory
452 2320301 - Disclosure - Trade payables and other liabilities (Tables) Network

*

*

 http://www.bce.ca/role/TradePayablesAndOtherLiabilitiesTables
453 Implied Table Table

*

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 implied:Table
454 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
455 Disclosure of trade payables and other liabilities Concept (Text Block (HTML)) For Period bce:DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTableTextBlock
456 2321301 - Disclosure - Debt due within one year (Tables) Network

*

*

 http://www.bce.ca/role/DebtDueWithinOneYearTables
457 Implied Table Table

*

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 implied:Table
458 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
459 Schedule of Debt Due Within One Year Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
460 Details of Securitized Trade Receivables Concept (Text Block (HTML)) For Period bce:DisclosureOfSecuritisedTradeReceivablesExplanatoryTableTextBlock
461 Summary of Total Bank Credit Facilities Concept (Text Block (HTML)) For Period bce:DisclosureOfDetailedInformationAboutCreditFacilitiesTableTextBlock
462 2322301 - Disclosure - Long-term debt (Tables) Network

*

*

 http://www.bce.ca/role/LongTermDebtTables
463 Implied Table Table

*

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 implied:Table
464 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
465 Summary of Long-Term Debt Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
466 2323301 - Disclosure - Provisions (Tables) Network

*

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 http://www.bce.ca/role/ProvisionsTables
467 Implied Table Table

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468 Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Abstract bce:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
469 Disclosure of other provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
470 2324301 - Disclosure - Post-employee benefit plans (Tables) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansTables
471 Implied Table Table

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472 Employee Benefits [Abstract] Abstract bce:EmployeeBenefitsAbstract
473 Components of post-employment benefit plans service cost Concept (Text Block (HTML)) For Period bce:DisclosureOfDefinedBenefitPlansServiceCostExplanatoryTableTextBlock
474 Components of post-employment benefit plans financing cost Concept (Text Block (HTML)) For Period bce:DisclosureOfDefinedBenefitPlansInterestCostExplanatoryTableTextBlock
475 Defined benefit plans recognized in comprehensive income Concept (Text Block (HTML)) For Period bce:DisclosureOfDefinedBenefitPlanExpenseRecognizedInOtherComprehensiveIncomeLossExplanatoryTableTextBlock
476 Components of post-employment benefit (obligations) assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
477 Funded status of post-employment benefit plans cost Concept (Text Block (HTML)) For Period bce:DisclosureOfFundedStatusOfPostemploymentBenefitPlansTableTextBlock
478 Disclosure of significant assumptions Concept (Text Block (HTML)) For Period bce:DisclosureOfActuarialAssumptionsForDefinedBenefitPlansTableTextBlock
479 Healthcare cost trend rates and sensitivity analysis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
480 Post-employment benefit plan assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
481 Disclosure of contributions to post-employment benefit plans Concept (Text Block (HTML)) For Period bce:DisclosureOfContributionstoPostemploymentBenefitPlansTableTextBlock
482 2325301 - Disclosure - Other non-current liabilities (Tables) Network

*

*

 http://www.bce.ca/role/OtherNonCurrentLiabilitiesTables
483 Implied Table Table

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 implied:Table
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485 Disclosure of other non-current liabilities Concept (Text Block (HTML)) For Period bce:DisclosureOfOtherNoncurrentLiabilitiesTableTextBlock
486 2326301 - Disclosure - Financial and capital management (Tables) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementTables
487 Implied Table Table

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488 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
489 Fair value details of financial instruments measured at amortized cost Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
490 Disclosure of fair value measurement of assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
491 Disclosure of fair value measurement of liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesExplanatory
492 Change in allowance for doubtful accounts Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
493 Details on trade receivables not impaired Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedExplanatory
494 Maturity analysis for recognized financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
495 Details on outstanding foreign currency forward contracts and cross currency basis swaps Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsExplanatory
496 Summary of key ratios Concept (Text Block (HTML)) For Period bce:DisclosureOfKeyInternalRatiosAndMetricsTableTextBlock
497 2327301 - Disclosure - Share capital (Tables) Network

*

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 http://www.bce.ca/role/ShareCapitalTables
498 Implied Table Table

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500 Summary of Principal Terms of Preference Shares and Common Shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
501 2328301 - Disclosure - Share-based payments (Tables) Network

*

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 http://www.bce.ca/role/ShareBasedPaymentsTables
502 Implied Table Table

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505 Disclosure of number and weighted average exercise prices of share options Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
506 Disclosure of number and weighted average exercise prices of other equity instruments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
507 Disclosure of range of exercise prices of outstanding share options Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory
508 Disclosure of indirect measurement of fair value of goods or services received, share options granted during period Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory
509 2329301 - Disclosure - Additional cash flow information (Tables) Network

*

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 http://www.bce.ca/role/AdditionalCashFlowInformationTables
510 Implied Table Table

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 implied:Table
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512 Schedule of reconciliation of changes in liabilities arising from financing activities Concept (Text Block (HTML)) For Period bce:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatoryTableTextBlock
513 2330301 - Disclosure - Remaining performance obligations (Tables) Network

*

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 http://www.bce.ca/role/RemainingPerformanceObligationsTables
514 Implied Table Table

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 implied:Table
515 Revenue From Contract With Customer1 [Abstract] Abstract bce:RevenueFromContractWithCustomer1Abstract
516 Remaining performance obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPerformanceObligationsExplanatory
517 2331301 - Disclosure - Commitments and contingencies (Tables) Network

*

*

 http://www.bce.ca/role/CommitmentsAndContingenciesTables
518 Implied Table Table

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519 Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Abstract bce:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
520 Contractual obligation, fiscal year maturity schedule Concept (Text Block (HTML)) For Period bce:ContractualObligationFiscalYearMaturitySchedule1TableTextBlock
521 2332301 - Disclosure - Related party transactions (Tables) Network

*

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 http://www.bce.ca/role/RelatedPartyTransactionsTables
522 Implied Table Table

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523 Related Party [Abstract] Abstract bce:RelatedPartyAbstract
524 Summary of significant subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
525 Compensation of Key Management Personnel Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
526 2333301 - Disclosure - Significant partly-owned subsidiaries (Tables) Network

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 http://www.bce.ca/role/SignificantAccountingPoliciesDepreciationAndAmortizationDetails
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 http://www.bce.ca/role/SignificantAccountingPoliciesPostEmploymentBenefitPlansDetails
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 http://www.bce.ca/role/SignificantAccountingPoliciesAdoptionOfNewOrAmendedAccountingStandardsDetails
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 http://www.bce.ca/role/SignificantAccountingPoliciesFutureChangesToAccountingStandardsDetails
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 http://www.bce.ca/role/BusinessAcquisitionsAndDispositionsAcquisitionOfAxisNetmediaCorporationDetails
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 http://www.bce.ca/role/BusinessAcquisitionsAndDispositionsSummaryOfFairValueOfConsiderationPaidAndFairValueAssignedToEachMajorClassOfAssetsAndLiabilitiesDetails
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 http://www.bce.ca/role/BusinessAcquisitionsAndDispositionsAcquisitionOfAlarmforceDetails
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 http://www.bce.ca/role/BusinessAcquisitionsAndDispositionsAcquisitionOfMtsDetails
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 http://www.bce.ca/role/BusinessAcquisitionsAndDispositionsAcquisitionOfCieslokMediaLtdDetails
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 http://www.bce.ca/role/SegmentedInformationSegmentedInformationDetails
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 http://www.bce.ca/role/SegmentedInformationRevenuesByServicesAndProductsDetails
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 http://www.bce.ca/role/OperatingCostsDetails
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 http://www.bce.ca/role/SeveranceAcquisitionAndOtherCostsDetails
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 http://www.bce.ca/role/InterestExpenseDetails
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803 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
804 Cash-generating units Member ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember
805 Disclosure of information for cash-generating units [line items] LineItems ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
806 Impairment loss Concept (Monetary) For Period Debit ifrs-full:ImpairmentLoss
807 Number of small market radio stations impaired Concept (Integer) As Of bce:NumberofSmallMarketRadioStationsImpaired
808 Explanation of period over which management has projected cash flows, period Concept (xbrli:durationItemType) For Period bce:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlowsPeriod
809 Discount rate applied to cash flow projections Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
810 Growth rate used to extrapolate cash flow projections Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
811 Recoverable amount of asset or cash-generating unit Concept (Monetary) As Of Debit ifrs-full:RecoverableAmountOfAssetOrCashgeneratingUnit
812 Loss on investment, equity loss of share obligation Concept (Monetary) For Period Credit bce:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodShareofObligationtoPurchase
813 Losses on disposals of investments Concept (Monetary) For Period Debit ifrs-full:LossesOnDisposalsOfInvestments
814 2409402 - Disclosure - Income taxes - Significant Components of Income Taxes Deducted from Net Earnings (Details) Network

*

*

 http://www.bce.ca/role/IncomeTaxesSignificantComponentsOfIncomeTaxesDeductedFromNetEarningsDetails
815 Implied Table Table

*

*

 implied:Table
816 Income Taxes [Abstract] Abstract bce:IncomeTaxesAbstract
817 Current taxes Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
818 Current taxes Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
819 Uncertain tax positions Concept (Monetary) For Period Debit bce:AdjustmentsForCurrentTaxExpenseIncomeOfUncertainTaxPositions
820 Change in estimate relating to prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
821 Deferred taxes Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
822 Deferred taxes relating to the origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
823 Change in estimate relating to prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
824 Recognition and utilization of loss carryforwards Concept (Monetary) For Period Debit bce:DeferredTaxExpenseIncomeRelatingToRecognitionandUtilizationofLossCarryforwards
825 Effect of change in provincial corporate tax rate Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
826 Resolution of uncertain tax positions Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
827 Total income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
828 2409403 - Disclosure - Income taxes - Narrative (Details) Network

*

*

 http://www.bce.ca/role/IncomeTaxesNarrativeDetails
829 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
830 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
831 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
832 Non-capital tax loss carryforwards Member bce:NoncapitalUnusedTaxLossesMember
833 Capital loss carryforwards Member bce:CapitalUnusedTaxLossesMember
834 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
835 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
836 MTS Member bce:MTSMember
837 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
838 Unused tax loss carryforward Concept (Monetary) As Of Debit bce:UnusedTaxLossCarryforward
839 Deferred tax asset Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
840 Unused tax losses for which no deferred tax asset recognised Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
841 2409404 - Disclosure - Income taxes - Reconciliation of Reported Income Taxes in the Income Statement (Details) Network

*

*

 http://www.bce.ca/role/IncomeTaxesReconciliationOfReportedIncomeTaxesInIncomeStatementDetails
842 Implied Table Table

*

*

 implied:Table
843 Income Taxes [Abstract] Abstract bce:IncomeTaxesAbstract
844 Net earnings (losses) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
845 Add back income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
846 Earnings before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
847 Applicable statutory tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
848 Income taxes computed at applicable statutory rates Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
849 Non-taxable portion of losses on investments Concept (Monetary) For Period Credit bce:TaxEffectOfRevenuesExemptFromTaxationGainsonInvestments
850 Uncertain tax positions Concept (Monetary) For Period Debit bce:TaxEffectOfUncertainTaxPositions
851 Effect of change in provincial corporate tax rate Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
852 Change in estimate relating to prior periods Concept (Monetary) For Period Debit bce:TaxEffectOfPriorYearIncomeTaxes
853 Non-taxable portion of equity losses Concept (Monetary) For Period Credit bce:TaxEffectOfIncomeExemptFromTaxationExcludingGainsonInvestments
854 Other Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
855 Total income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
856 Average effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
857 2409405 - Disclosure - Income taxes - Disclosure of Current and Deferred Taxes (Details) Network

*

*

 http://www.bce.ca/role/IncomeTaxesDisclosureOfCurrentAndDeferredTaxesDetails
858 Implied Table Table

*

*

 implied:Table
859 Income Taxes [Abstract] Abstract bce:IncomeTaxesAbstract
860 OTHER COMPREHENSIVE (INCOME) LOSS Abstract ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeAbstract
861 Current taxes Concept (Monetary) For Period Debit bce:CurrentTaxExpenseIncomeRecognisedInOtherComprehensiveIncome
862 Deferred taxes Concept (Monetary) For Period Debit bce:DeferredTaxExpenseIncomeRecognisedInOtherComprehensiveIncome
863 Total income taxes (expense) recovery Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
864 DEFICIT Abstract ifrs-full:CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAbstract
865 Current taxes Concept (Monetary) For Period Debit ifrs-full:CurrentTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
866 Deficit Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
867 Total income taxes (expense) recovery Concept (Monetary) For Period Debit ifrs-full:CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
868 2409406 - Disclosure - Income taxes - Deferred Taxes Resulting From Temporary Differences (Details) Network

*

*

 http://www.bce.ca/role/IncomeTaxesDeferredTaxesResultingFromTemporaryDifferencesDetails
869 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
870 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
871 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
872 NON- CAPITAL LOSS CARRY- FORWARDS Member bce:NoncapitalUnusedTaxLossesMember
873 POST EMPLOYMENT BENEFIT PLANS Member bce:PostEmploymentBenefitPlansRelatedTemporaryDifferencesMember
874 INDEFINITE- LIFE INTANGIBLE ASSETS Member bce:IndefiniteLivedIntangibleAssetsRelatedTemporaryDifferencesMember
875 PROPERTY, PLANT AND EQUIPMENT AND FINITE- LIFE INTANGIBLE ASSETS Member bce:PropertyPlantAndEquipmentandFiniteLivedIntangibleAssetsRelatedTemporaryDifferencesMember
876 INVESTMENT TAX CREDITS Member ifrs-full:UnusedTaxCreditsMember
877 CRTC TANGIBLE BENEFITS Member bce:TangibleBenefitsMember
878 OTHER Member bce:OtherRelatedTemporaryDifferencesMember
879 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
880 Reconciliation of changes in deferred tax liability (asset) [abstract] Abstract ifrs-full:ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
881 Deferred tax liability (asset) Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
882 Income statement Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
883 Business acquisitions Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset
884 Other comprehensive income Concept (Monetary) For Period Debit bce:DeferredTaxExpenseIncomeRecognisedInOtherComprehensiveIncome
885 Deficit Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
886 Other Concept (Monetary) For Period Credit bce:Increasedecreasethroughotherdeferredtaxliabilityasset
887 Deferred tax liability (asset) Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
888 2410402 - Disclosure - Earnings per share (Details) Network

*

*

 http://www.bce.ca/role/EarningsPerShareDetails
889 Implied Table Table

*

*

 implied:Table
890 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
891 Net earnings attributable to common shareholders - basic Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
892 Dividends declared per common share (in dollars) (CAD Per Share) Concept (Share) For Period ifrs-full:DividendsRecognisedAsDistributionsToOwnersPerShare
893 Weighted average number of common shares outstanding (in millions) Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
894 Average number of common shares outstanding - basic (millions) (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
895 Assumed exercise of stock options (in shares) Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
896 Weighted average number of common shares outstanding - diluted (in millions) (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
897 Shares excluded from calculation of earnings per share (in shares) Concept (Shares) For Period bce:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount1
898 2411402 - Disclosure - Trade and other receivables (Details) Network

*

*

 http://www.bce.ca/role/TradeAndOtherReceivablesDetails
899 Disclosure Of Trade And Other Receivables [Table] Table

*

*

 bce:DisclosureOfTradeAndOtherReceivablesTable
900 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
901 Carrying amount [member] Member ifrs-full:CarryingAmountMember
902 Gross carrying amount Member ifrs-full:GrossCarryingAmountMember
903 Allowance for doubtful accounts Member bce:AllowanceForDoubtfulAccounts1Member
904 Allowance for revenue adjustments Member bce:AllowanceForRevenueAdjustmentsMember
905 Disclosure Of Trade And Other Receivables [Line Items] LineItems bce:DisclosureOfTradeAndOtherReceivablesLineItems
906 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
907 Current tax receivable Concept (Monetary) As Of Debit ifrs-full:CurrentReceivablesFromTaxesOtherThanIncomeTax
908 Other accounts receivable Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
909 Total trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
910 2412402 - Disclosure - Inventory (Details) Network

*

*

 http://www.bce.ca/role/InventoryDetails
911 Implied Table Table

*

*

 implied:Table
912 Inventories [Abstract] Abstract bce:InventoriesAbstract
913 Wireless devices and accessories Concept (Monetary) As Of Debit ifrs-full:FinishedGoods
914 Merchandise and other Concept (Monetary) As Of Debit bce:CurrentMerchandiseAndOtherCurrentInventories
915 Total inventory Concept (Monetary) As Of Debit ifrs-full:Inventories
916 Inventory recognized in cost of revenues Concept (Monetary) For Period Debit ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod
917 2413402 - Disclosure - Contracts assets and liabilities (Details) Network

*

*

 http://www.bce.ca/role/ContractsAssetsAndLiabilitiesDetails
918 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
919 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
920 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
921 Contract assets Member ifrs-full:ContractAssetsMember
922 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
923 CONTRACT ASSETS Abstract ifrs-full:ContractAssetsAbstract
924 Beginning balance Concept (Monetary) As Of Debit ifrs-full:ContractAssets
925 Revenue recognized from contract liabilities included in contract assets at the beginning of the year Concept (Monetary) For Period Debit bce:RevenueThatWasIncludedInContractAssetBalanceAtBeginningOfPeriod
926 Increase in contract liabilities included in contract assets during the year Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughCumulativeCatchupAdjustmentsToRevenueContractAssets
927 Increase in contract assets from revenue recognized during the year Concept (Monetary) For Period Debit bce:IncreaseThroughNewContractAdditionsContractAssets
928 Contract assets transferred to trade receivables Concept (Monetary) For Period Credit bce:DecreaseThroughReclassificationsToReceivablesContractAssets
929 Acquisitions Concept (Monetary) For Period Debit ifrs-full:IncreaseThroughBusinessCombinationsContractAssets
930 Contract terminations transferred to trade receivables Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughImpairmentContractAssets
931 Other Concept (Monetary) For Period Credit bce:DecreaseThroughOtherActivitiesContractAssets
932 Ending balance Concept (Monetary) As Of Debit ifrs-full:ContractAssets
933 CONTRACT LIABILITIES Abstract ifrs-full:ContractLiabilitiesAbstract
934 Opening balance Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
935 Revenue recognized included in contract liabilities at the beginning of the year Concept (Monetary) For Period Credit ifrs-full:RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
936 Increase in contract liabilities during the year Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughCumulativeCatchupAdjustmentsToRevenueContractLiabilities
937 Acquisitions Concept (Monetary) For Period Credit ifrs-full:IncreaseThroughBusinessCombinationsContractLiabilities
938 Contract terminations transferred to trade receivables Concept (Monetary) For Period Debit bce:DecreaseThroughImpairmentContractLiabilities
939 Other Concept (Monetary) For Period Debit bce:DecreaseThroughOtherActivitiesContractLiabilities
940 Ending balance Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
941 Allowance for doubtful accounts Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
942 2414402 - Disclosure - Contract costs (Details) Network

*

*

 http://www.bce.ca/role/ContractCostsDetails
943 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
944 Range [axis] Axis ifrs-full:RangeAxis
945 Ranges [member] Member ifrs-full:RangesMember
946 Bottom of range Member ifrs-full:BottomOfRangeMember
947 Top of range Member ifrs-full:TopOfRangeMember
948 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
949 Contract costs, amortization period Concept (xbrli:durationItemType) For Period bce:IncrementalCostsIncurredToObtainOrFulfillContractsWithCustomersAmortizationPeriod
950 2415402 - Disclosure - Property, plant and equipment - Schedule of Property, Plant and Equipment (Details) Network

*

*

 http://www.bce.ca/role/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails
951 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
952 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
953 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
954 NETWORK INFRASTRUCTURE AND EQUIPMENT Member bce:NetworkInfrastructureAndCommunicationAndNetworkEquipmentMember
955 LAND AND BUILDINGS Member ifrs-full:LandAndBuildingsMember
956 ASSETS UNDER CONSTRUCTION Member ifrs-full:ConstructionInProgressMember
957 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
958 Carrying amount [member] Member ifrs-full:CarryingAmountMember
959 COST Member ifrs-full:GrossCarryingAmountMember
960 ACCUMULATED DEPRECIATION Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
961 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
962 Reconciliation of changes in property, plant and equipment [abstract] Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
963 Beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
964 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
965 Acquisition through business combinations Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
966 Transfers Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment
967 Retirements and disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
968 Impairment losses recognized in earnings Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
969 Depreciation Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
970 Other Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
971 Ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
972 2415403 - Disclosure - Property, plant and equipment - Finance Leases (Details) Network

*

*

 http://www.bce.ca/role/PropertyPlantAndEquipmentFinanceLeasesDetails
973 Disclosure of quantitative information about right-of-use assets [table] Table

*

*

 ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable
974 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
975 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
976 Office leases Member ifrs-full:BuildingsMember
977 Satellites Member ifrs-full:CommunicationAndNetworkEquipmentMember
978 Network infrastructure and equipment Member bce:NetworkInfrastructureAndCommunicationAndNetworkEquipmentMember
979 Land and buildings Member ifrs-full:LandAndBuildingsMember
980 Disclosure of quantitative information about right-of-use assets [line items] LineItems ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems
981 Finance lease term of contract Concept (xbrli:durationItemType) For Period bce:LesseeFinanceLeaseTermOfContract1
982 ADDITIONS Concept (Monetary) For Period Debit bce:AdditionsToAssetsUnderFinanceLeases
983 NET CARRYING AMOUNT Concept (Monetary) As Of Debit ifrs-full:RecognisedFinanceLeaseAsAssets
984 2415404 - Disclosure - Property, plant and equipment - Reconciliation of Minimum Future Lease Payments (Details) Network

*

*

 http://www.bce.ca/role/PropertyPlantAndEquipmentReconciliationOfMinimumFutureLeasePaymentsDetails
985 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
986 Maturity [axis] Axis ifrs-full:MaturityAxis
987 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
988 2019 Member ifrs-full:NotLaterThanOneYearMember
989 2020 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
990 2021 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
991 2022 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
992 2023 Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
993 THERE- AFTER Member ifrs-full:LaterThanFiveYearsMember
994 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
995 Minimum future lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
996 Less: Abstract bce:FutureFinanceChargeOnFinanceLeaseAbstract
997 Future finance costs Concept (Monetary) As Of Credit ifrs-full:FutureFinanceChargeOnFinanceLease
998 Present value of future lease obligations Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
999 2416402 - Disclosure - Intangible assets (Details) Network

*

*

 http://www.bce.ca/role/IntangibleAssetsDetails
1000 Disclosure of detailed information about intangible assets [table] Table

*

*

 ifrs-full:DisclosureOfIntangibleAssetsTable
1001 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1002 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1003 SOFTWARE Member ifrs-full:ComputerSoftwareMember
1004 CUSTOMER RELATION- SHIPS Member ifrs-full:CustomerrelatedIntangibleAssetsMember
1005 PROGRAM AND FEATURE FILM RIGHTS Member ifrs-full:BroadcastingRightsMember
1006 OTHER Member ifrs-full:OtherIntangibleAssetsMember
1007 TOTAL Member bce:FiniteLivedIntangibleAssets1Member
1008 Intangible assets with indefinite useful life [axis] Axis ifrs-full:IntangibleAssetsWithIndefiniteUsefulLifeAxis
1009 Intangible assets with indefinite useful life [member] Member ifrs-full:IntangibleAssetsWithIndefiniteUsefulLifeMember
1010 BRANDS Member ifrs-full:BrandNamesMember
1011 SPECTRUM AND OTHER LICENCES Member bce:SpectrumandotherlicensesMember
1012 BROADCAST LICENCES Member bce:BroadcastlicensesMember
1013 TOTAL Member bce:IndefiniteLivedIntangibleAssets1Member
1014 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1015 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1016 COST Member ifrs-full:GrossCarryingAmountMember
1017 ACCUMULATED AMORTIZATION Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
1018 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1019 Reconciliation of changes in intangible assets and goodwill [abstract] Abstract ifrs-full:ReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
1020 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1021 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1022 Acquired through business combinations Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1023 Transfers Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersIntangibleAssetsOtherThanGoodwill
1024 Retirements and disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsIntangibleAssetsOtherThanGoodwill
1025 Impairment losses recognized in earnings Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
1026 Amortization Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1027 Other Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill
1028 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1029 2417402 - Disclosure - Investments in associates and joint ventures (Details) Network

*

*

 http://www.bce.ca/role/InvestmentsInAssociatesAndJointVenturesDetails
1030 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1031 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1032 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1033 Joint ventures Member ifrs-full:JointVenturesMember
1034 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1035 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1036 Associates Member ifrs-full:AssociatesMember
1037 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1038 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1039 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1040 Total net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
1041 BCE’s share of net assets Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1042 Revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1043 Expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
1044 Net earnings (losses) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1045 BCE’s share of net losses Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1046 2418402 - Disclosure - Other non-current assets (Details) Network

*

*

 http://www.bce.ca/role/OtherNonCurrentAssetsDetails
1047 Implied Table Table

*

*

 implied:Table
1048 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1049 Net assets of post-employment benefit plans Concept (Monetary) As Of Debit ifrs-full:NoncurrentRecognisedAssetsDefinedBenefitPlan
1050 Investments Concept (Monetary) As Of Debit ifrs-full:AssetsToWhichSignificantRestrictionsApply
1051 Publicly-traded and privately-held investments Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAvailableforsale
1052 Long-term notes and other receivables Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
1053 Derivative assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
1054 Other Concept (Monetary) As Of Debit bce:NoncurrentOtherMiscellaneousAssets
1055 Total other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1056 2419402 - Disclosure - Goodwill - Changes in Carrying Amounts of Goodwill (Details) Network

*

*

 http://www.bce.ca/role/GoodwillChangesInCarryingAmountsOfGoodwillDetails
1057 Disclosure of reconciliation of changes in goodwill [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
1058 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1059 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1060 Goodwill Member ifrs-full:GoodwillMember
1061 Segments [axis] Axis ifrs-full:SegmentsAxis
1062 Segments [member] Member ifrs-full:SegmentsMember
1063 BELL WIRELESS Member bce:BellWirelessMember
1064 BELL WIRELINE Member bce:BellWirelineMember
1065 BELL MEDIA Member bce:BellMediaMember
1066 Disclosure of reconciliation of changes in goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
1067 Reconciliation of changes in intangible assets and goodwill [abstract] Abstract ifrs-full:ReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
1068 Goodwill, beginning of period Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1069 Acquisitions and other Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
1070 Goodwill, end of period Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1071 2419403 - Disclosure - Goodwill - Narrative (Details) Network

*

*

 http://www.bce.ca/role/GoodwillNarrativeDetails
1072 Disclosure of information for cash-generating units [table] Table

*

*

 ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable
1073 Cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1074 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1075 BELL MEDIA Member bce:BellMediaMember
1076 Disclosure of information for cash-generating units [line items] LineItems ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
1077 Decrease in perpetuity growth rate resulting in recoverable amount being equal to carrying value (as a percent) Concept (Percent) As Of bce:AmountByWhichValueAssignedToGrowthRateUsedToExtrapolateCashFlowProjectionsMustChangeInOrderForUnitsRecoverableAmountToBeEqualToCarryingamount
1078 Increase in discount rate resulting in recoverable amount being equal to carrying amount (as a percent) Concept (Percent) As Of bce:AmountByWhichValueAssignedToDiscountRateAppliedToCashFlowProjectionsMustChangeInOrderForUnitsRecoverableAmountToBeEqualToCarryingAmount
1079 2419404 - Disclosure - Goodwill - Key Assumptions Used to Estimate the Recoverable Amounts (Details) Network

*

*

 http://www.bce.ca/role/GoodwillKeyAssumptionsUsedToEstimateRecoverableAmountsDetails
1080 Disclosure of information for cash-generating units [table] Table

*

*

 ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable
1081 Cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1082 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1083 Bell Wireless Member bce:BellWirelessMember
1084 Bell Wireline Member bce:BellWirelineMember
1085 Bell Media Member bce:BellMediaMember
1086 Disclosure of information for cash-generating units [line items] LineItems ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
1087 Perpetuity Growth Rate (as a percent) Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1088 Discount Rate (as a percent) Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1089 2420402 - Disclosure - Trade payables and other liabilities (Details) Network

*

*

 http://www.bce.ca/role/TradePayablesAndOtherLiabilitiesDetails
1090 Implied Table Table

*

*

 implied:Table
1091 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1092 Trade payables and accruals Concept (Monetary) As Of Credit bce:TradePayablesandCurrentAccruals
1093 Compensation payable Concept (Monetary) As Of Credit ifrs-full:ShorttermEmployeeBenefitsAccruals
1094 Taxes payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
1095 Maple Leaf Sports and Entertainment Ltd. (MLSE) financial liability Concept (Monetary) As Of Credit bce:NoncurrentRepurchaseObligationOfTrust
1096 Derivative liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
1097 CRTC tangible benefits obligation Concept (Monetary) As Of Credit bce:CurrentTangibleBenefitsObligation
1098 Provisions Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
1099 Severance and other costs payable Concept (Monetary) As Of Credit bce:EmployeeSeveranceLiabilityCurrent
1100 CRTC deferral account obligation Concept (Monetary) As Of Credit bce:CurrentDeferredAccountObligation
1101 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
1102 Total trade payables and other liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1103 Repurchase obligation of trust ownership percentage Concept (Percent) As Of bce:RepurchaseObligationOfTrustOwnershipPercentage
1104 2421402 - Disclosure - Debt due within one year - Schedule of Debt Due Within One Year (Details) Network

*

*

 http://www.bce.ca/role/DebtDueWithinOneYearScheduleOfDebtDueWithinOneYearDetails
1105 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1106 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1107 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1108 Gross carrying amount Member ifrs-full:GrossCarryingAmountMember
1109 Net unamortized discount Member bce:NetUnamortisedDiscountPremiumMember
1110 Unamortized debt issuance costs Member bce:UnamortisedDebtIssuanceCostsMember
1111 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1112 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1113 Notes payable Member bce:NotesPayablesMember
1114 Loans secured by trade receivables Member bce:LoansSecuredByTradeReceivablesMember
1115 Long-term debt due within one year Member bce:LongTermDebtDueWithinOneYearExcludingLineOfCreditMember
1116 Unsecured committed term credit facility Member bce:UnsecuredCommittedTermCreditFacilityMember
1117 Commercial paper Member bce:CommercialPaper1Member
1118 Finance leases Member bce:FinanceLeasesMember
1119 Range [axis] Axis ifrs-full:RangeAxis
1120 Ranges [member] Member ifrs-full:RangesMember
1121 Weighted Average Member ifrs-full:WeightedAverageMember
1122 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1123 WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2018 Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1124 Current borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1125 Total long-term debt due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1126 Total debt due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1127 Repayments of non-current borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
1128 2421403 - Disclosure - Debt due within one year - Details of Securitized Trade Receivables (Details) Network

*

*

 http://www.bce.ca/role/DebtDueWithinOneYearDetailsOfSecuritizedTradeReceivablesDetails
1129 Implied Table Table

*

*

 implied:Table
1130 Financial Instruments [Abstract] Abstract bce:FinancialInstrumentsAbstract
1131 Average interest rate throughout the year Concept (Percent) As Of bce:SecuritisedTradeReceivablesAverageInterestRateDuringPeriod
1132 Securitized trade receivables Concept (Monetary) As Of Debit bce:CurrentSecuritisedTradeReceivables
1133 2421404 - Disclosure - Debt due within one year - Narrative (Details) Network

*

*

 http://www.bce.ca/role/DebtDueWithinOneYearNarrativeDetails
1134 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1135 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1136 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1137 Unsecured revolving credit facility Member bce:UnsecuredRevolvingCreditFacilityMember
1138 Unsecured revolving credit facility and expansion facility Member bce:UnsecuredRevolvingCreditFacilityAndExpansionFacilityMember
1139 Commercial paper Member bce:CommercialPaper1Member
1140 Committed credit facilities Member bce:CommittedCreditFacilitiesMember
1141 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1142 Maximum borrowing capacity Concept (Monetary) As Of Credit bce:LineOfCreditFacilityMaximumBorrowingCapacity1
1143 Increase in line of credit facility Concept (Monetary) For Period Credit bce:LineOfCreditFacilityIncreaseDecreaseNet
1144 2421405 - Disclosure - Debt due within one year - Summary of Total Bank Credit Facilities (Details) Network

*

*

 http://www.bce.ca/role/DebtDueWithinOneYearSummaryOfTotalBankCreditFacilitiesDetails
1145 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1146 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1147 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1148 Unsecured revolving credit facility and expansion facility Member bce:UnsecuredRevolvingCreditFacilityAndExpansionFacilityMember
1149 Other Member bce:OtherCreditFacilityMember
1150 Total committed credit facilities Member bce:CommittedCreditFacilitiesMember
1151 Total non-committed credit facilities Member bce:NonCommittedCreditFacilitiesMember
1152 Total committed and non-committed credit facilities Member bce:CommittedandNoncommittedCreditFacilitiesMember
1153 Unsecured revolving credit facility Member bce:UnsecuredRevolvingCreditFacilityMember
1154 Unsecured expansion facility Member bce:UnsecuredExpansionFacilityMember
1155 Revolving facility Member bce:RevolvingCreditFacility1Member
1156 Term loan Member bce:TermLoanMember
1157 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1158 TOTAL AVAILABLE Concept (Monetary) As Of Credit bce:LineOfCreditFacilityMaximumBorrowingCapacity1
1159 DRAWN Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1160 LETTERS OF CREDIT Concept (Monetary) As Of Credit bce:LettersofCreditOutstandingAmount1
1161 COMMERCIAL PAPER OUTSTANDING Concept (Monetary) As Of Credit ifrs-full:CurrentCommercialPapersIssuedAndCurrentPortionOfNoncurrentCommercialPapersIssued
1162 NET AVAILABLE Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
1163 Debt Instrument, Term1 Concept (xbrli:durationItemType) For Period bce:DebtInstrumentTerm1
1164 2422402 - Disclosure - Long-term debt - Summary of Long-Term Debt (Details) Network

*

*

 http://www.bce.ca/role/LongTermDebtSummaryOfLongTermDebtDetails
1165 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1166 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1167 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1168 Gross carrying amount Member ifrs-full:GrossCarryingAmountMember
1169 Net unamortized premium Member bce:NetUnamortisedDiscountPremiumMember
1170 Unamortized debt issuance costs Member bce:UnamortisedDebtIssuanceCostsMember
1171 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1172 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1173 1997 trust indenture Member bce:Debentures1997TrustIndentureMember
1174 1976 trust indenture Member bce:Debentures1976TrustIndentureMember
1175 2011 trust indenture Member bce:Debentures2011TrustIndentureMember
1176 2001 trust indenture Member bce:Debentures2001TrustIndentureMember
1177 2016 U.S. trust indenture Member bce:Debentures2016TrustIndentureMember
1178 1996 trust indenture (subordinated) Member bce:SubordinatedDebt1Member
1179 Finance leases Member bce:FinanceLeasesMember
1180 Unsecured committed term credit facility Member bce:UnsecuredCommittedTermCreditFacilityMember
1181 Other Member bce:OtherDebtMember
1182 Range [axis] Axis ifrs-full:RangeAxis
1183 Ranges [member] Member ifrs-full:RangesMember
1184 Weighted Average Member ifrs-full:WeightedAverageMember
1185 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1186 WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2018 Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1187 Total debt Concept (Monetary) As Of Credit bce:NonCurrentBorrowings
1188 Total long-term debt due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1189 Total long-term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1190 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1191 Repayments of non-current borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
1192 2422403 - Disclosure - Long-term debt - Narrative (Details) Network

*

*

 http://www.bce.ca/role/LongTermDebtNarrativeDetails
1193 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1194 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1195 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1196 Series 8 notes Member bce:Series8NotesMember
1197 Series M-25 medium term notes Member bce:SeriesM25MediumTermNotesMember
1198 Series US-1 Notes Member bce:SeriesUS1NotesMember
1199 Series M-48 MTN debentures Member bce:SeriesM48MediumTermNotesMember
1200 Series M-28 MTN debentures Member bce:SeriesM28MediumTermNotesMember
1201 Series 9 notes Member bce:Series9NotesMember
1202 Series M-33 debentures Member bce:SeriesM33DebenturesMember
1203 Series M-47 MTN debentures Member bce:SeriesM47MediumTermNotesMember
1204 Series M-22 MTN debentures Member bce:SeriesM22MediumTermNotesMember
1205 Series M-36 debentures Member bce:SeriesM36MediumTermNotesMember
1206 Series M-40 MTN debentures Member bce:SeriesM40MediumTermNotesMember
1207 Series M-46 MTN debentures Member bce:SeriesM46MediumTermNotesMember
1208 Series M-35 debentures Member bce:SeriesM35MediumTermNotesMember
1209 Series M-44 MTN debentures Member bce:SeriesM44MediumTermNotesMember
1210 Series M-45 MTN debentures Member bce:SeriesM45MediumTermNotesMember
1211 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1212 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1213 Fixed interest rate Member ifrs-full:FixedInterestRateMember
1214 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1215 Interest rate (as a percent) Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1216 Principal amount redeemed Concept (Monetary) For Period Debit bce:ExtinguishmentOfDebtAmount1
1217 Principal amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1218 Borrowing costs recognised as expense Concept (Monetary) For Period Debit ifrs-full:BorrowingCostsRecognisedAsExpense
1219 Early debt redemption costs Concept (Monetary) For Period Credit ifrs-full:GainLossArisingFromDifferenceBetweenCarryingAmountOfFinancialLiabilityExtinguishedAndConsiderationPaid
1220 2423402 - Disclosure - Provisions (Details) Network

*

*

 http://www.bce.ca/role/ProvisionsDetails
1221 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
1222 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1223 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1224 AROs Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1225 Other Member ifrs-full:MiscellaneousOtherProvisionsMember
1226 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1227 Reconciliation of changes in other provisions [abstract] Abstract ifrs-full:ReconciliationOfChangesInOtherProvisionsAbstract
1228 Beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1229 Additions Concept (Monetary) For Period Credit ifrs-full:AdditionalProvisionsOtherProvisions
1230 Usage Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1231 Reversals Concept (Monetary) For Period Credit ifrs-full:ChangesInOtherProvisions
1232 Acquired through business combinations Concept (Monetary) For Period Credit ifrs-full:AcquisitionsThroughBusinessCombinationsOtherProvisions
1233 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1234 Current Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
1235 Non-current Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
1236 Total other provisions Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1237 2424402 - Disclosure - Post-employee benefit plans - Components of Post-Employment Benefit Plans Service Cost (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansComponentsOfPostEmploymentBenefitPlansServiceCostDetails
1238 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1239 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1240 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1241 DB pension Member bce:PensionPlansMember
1242 OPEBs Member bce:OtherPostretirementBenefitsPlanMember
1243 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1244 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1245 DC pension Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1246 Plan amendment gain on OPEBs and DB pension Concept (Monetary) For Period Credit bce:GainLossOnPlanAmendmentOfNetDefinedBenefitLiabilityAsset
1247 Less: Capitalized benefit plans cost Concept (Monetary) For Period Credit bce:PostEmploymentBenefitExpenseBenefitPlansServiceCostCapitalized
1248 Total post-employment benefit plans service cost included in operating costs Concept (Monetary) For Period Debit bce:PostEmploymentBenefitExpenseBenefitPlansServiceCostNetOperating
1249 Other costs recognized in severance, acquisition and other costs Concept (Monetary) For Period Debit bce:PostEmploymentBenefitExpenseBenefitPlansServiceCostNetNonOperating
1250 Total post-employment benefit plans service cost Concept (Monetary) For Period Debit bce:PostEmploymentBenefitExpenseBenefitPlansServiceCostNet
1251 2424403 - Disclosure - Post-employee benefit plans - Components of Post-Employment Benefit Plans Financing Cost (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansComponentsOfPostEmploymentBenefitPlansFinancingCostDetails
1252 Disclosure of net defined benefit liability (asset) [table] Table

*

*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1253 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1254 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1255 DB pension Member bce:PensionPlansMember
1256 OPEBs Member bce:OtherPostretirementBenefitsPlanMember
1257 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1258 Total interest on post-employment benefit obligations Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1259 2424404 - Disclosure - Post-employee benefit plans - Defined Benefit Plans Recognized in Comprehensive Income (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansDefinedBenefitPlansRecognizedInComprehensiveIncomeDetails
1260 Implied Table Table

*

*

 implied:Table
1261 Employee Benefits [Abstract] Abstract bce:EmployeeBenefitsAbstract
1262 Cumulative losses recognized directly in equity, January 1 Concept (Monetary) As Of Credit bce:ReserveOfMeasurementsOfDefinedBenefitPlansBeforeTax
1263 Actuarial gains (losses) in other comprehensive income Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1264 Decrease (increase) in the effect of the asset limit Concept (Monetary) For Period Debit ifrs-full:GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling
1265 Cumulative losses recognized directly in equity, December 31 Concept (Monetary) As Of Credit bce:ReserveOfMeasurementsOfDefinedBenefitPlansBeforeTax
1266 Cumulative actuarial losses Concept (Monetary) As Of Credit bce:ReserveOfMeasurementsOfDefinedBenefitPlansActuarialGainsLossBeforeTax
1267 Cumulative decrease in the effect of the asset limit Concept (Monetary) As Of Credit bce:ReserveOfMeasurementsOfDefinedBenefitPlansEffectOfAssetLimitBeforeTax
1268 2424405 - Disclosure - Post-employee benefit plans - Components of Post-Employment Benefit (Obligations) Assets (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansComponentsOfPostEmploymentBenefitObligationsAssetsDetails
1269 Disclosure of net defined benefit liability (asset) [table] Table

*

*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1270 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1271 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1272 DB PENSION PLANS Member bce:PensionPlansMember
1273 OPEB PLANS Member bce:OtherPostretirementBenefitsPlanMember
1274 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1275 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1276 Benefit obligations Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1277 Plan assets Member ifrs-full:PlanAssetsMember
1278 Plan deficit Member bce:SurplusDeficitInPlanExcludingEffectofAssetCeilingMember
1279 Effect of asset limit Member ifrs-full:EffectOfAssetCeilingMember
1280 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1281 Post-employment benefit obligations/Fair value of plan assets, January 1 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1282 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1283 Interest on obligations Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1284 Actuarial gains (losses) Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1285 Net curtailment (losses) gains Concept (Monetary) For Period Credit ifrs-full:PastServiceCostAndGainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1286 Loss on plan transfer Concept (Monetary) For Period Debit bce:GainLossonPlanTransferNetDefinedBenefitLiabilityAsset
1287 Benefit payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1288 Employer contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1289 Employee contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
1290 Acquisition of MTS Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughBusinessCombinationsAndDisposalsNetDefinedBenefitLiabilityAsset
1291 Plan transfer Concept (Monetary) For Period Credit bce:PlanTransferNetDefinedBenefitLiabilityAsset
1292 Other Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
1293 Post-employment benefit obligations/Fair value of plan assets, December 31 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1294 Post-employment benefit assets included in other non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentRecognisedAssetsDefinedBenefitPlan
1295 Post-employment benefit obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
1296 Experience gains (losses) included in actuarial gains Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1297 Actual return on plan assets Concept (Monetary) For Period Debit bce:ReturnOnPlanAssetsIncludingAmountsIncludedInNetInterestOnTheNetDefinedBenefitLiabilityAsset
1298 Actual return on plan assets percent Concept (Percent) For Period bce:ReturnOnPlanAssetsIncludingAmountsIncludedInNetInterestOnTheNetDefinedBenefitLiabilityAssetPercent
1299 2424406 - Disclosure - Post-employee benefit plans - Funded Status of Post-Employment Benefit Plans Cost (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansFundedStatusOfPostEmploymentBenefitPlansCostDetails
1300 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1301 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1302 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1303 Plan deficit Member bce:SurplusDeficitInPlanExcludingEffectofAssetCeilingMember
1304 Retirement Plan Funding Status1 [Axis] Axis bce:RetirementPlanFundingStatus1Axis
1305 Retirement Plan Funding Status [Member] Member bce:RetirementPlanFundingStatusMember
1306 FUNDED Member bce:FundedPlan1Member
1307 PARTIALLY FUNDED Member bce:PartiallyFundedPlanMember
1308 UNFUNDED Member bce:UnfundedPlan1Member
1309 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1310 Present value of post-employment benefit obligations Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1311 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1312 Plan surplus (deficit) Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
1313 2424407 - Disclosure - Post-employee benefit plans - Significant Assumptions (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansSignificantAssumptionsDetails
1314 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1315 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1316 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1317 DB pension Member bce:PensionPlansMember
1318 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1319 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1320 Cost of medication Member bce:ActuarialAssumptionOfMedicalCostTrendRatesMedicationMember
1321 Cost of covered dental benefits Member bce:ActuarialAssumptionOfMedicalCostTrendRatesDentalBenefitsMember
1322 Cost of covered hospital benefits Member bce:ActuarialAssumptionOfMedicalCostTrendRatesHospitalBenefitsMember
1323 Cost of other covered healthcare benefits Member bce:ActuarialAssumptionOfMedicalCostTrendRatesOtherHealthcareBenefitsMember
1324 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1325 Post-employment benefit obligations Abstract bce:ActuarialAssumptionToMeasurePostEmploymentBenefitObligationsAbstract
1326 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1327 Rate of compensation increase Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
1328 Cost of living indexation rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
1329 Life expectancy at age 65 (years) Concept (Decimal) As Of ifrs-full:ActuarialAssumptionOfLifeExpectancyAfterRetirement
1330 Net post-employment benefit plans cost Abstract bce:ActuarialAssumptionToMeasurePostEmploymentBenefitPlansCostAbstract
1331 Discount rate Concept (Percent) For Period bce:ActuarialAssumptionOfDiscountRatesUsedtoCalculatePostemploymentBenefitExpense
1332 Rate of compensation increase Concept (Percent) For Period bce:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesUsedToCalculatePostEmploymentBenefitExpense
1333 Cost of living indexation rate Concept (Percent) For Period bce:ActuarialAssumptionOfExpectedRatesOfInflationUsedToCalculatePostEmploymentBenefitExpense
1334 Life expectancy at age 65 (years) Concept (Decimal) For Period bce:ActuarialAssumptionOfLifeExpectancyAfterRetirementUsedToCalculatePostEmploymentBenefitExpense
1335 Weighted average duration of defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
1336 Actuarial assumption of medical cost trend rates Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfMedicalCostTrendRates
1337 Ultimate actuarial assumption of medical cost trend rates Concept (Percent) As Of bce:UltimateActuarialAssumptionOfMedicalCostTrendRates
1338 Term to reach ultimate actuarial assumption of medical cost trend rate Concept (xbrli:durationItemType) For Period bce:UltimateActuarialAssumptionOfMedicalCostTrendRatesTerm
1339 2424408 - Disclosure - Post-employee benefit plans - Healthcare Cost Trend Rates and Sensitivity Analysis (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansHealthcareCostTrendRatesAndSensitivityAnalysisDetails
1340 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

 ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1341 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1342 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1343 Actuarial assumption of medical cost trend rates Member ifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMember
1344 Actuarial assumption of discount rates Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
1345 Actuarial assumption of life expectancy Member bce:ActuarialAssumptionofLifeExpectancyMember
1346 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1347 Percentage of reasonably possible increase in actuarial assumption Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
1348 Percentage of reasonably possible decrease in actuarial assumption Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
1349 Impact on net post-employment benefit plans cost, increase in assumption Concept (Monetary) For Period Debit bce:IncreaseDecreaseInDefinedBenefitPlanExpenseDueToReasonablyPossibleIncreaseInActuarialAssumption
1350 Impact on net post-employment benefit plans cost, decrease in assumption Concept (Monetary) For Period Debit bce:IncreaseDecreaseInDefinedBenefitPlanExpenseDueToReasonablyPossibleDecreaseInActuarialAssumption
1351 Impact on post-employment benefit obligation, increase in assumption Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1352 Impact on post-employment benefit obligation, decrease in assumption Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1353 Duration of reasonably possible decrease in actuarial assumptions Concept (xbrli:durationItemType) For Period bce:DurationofReasonablyPossibleDecreaseinActuarialAssumption
1354 Duration of reasonably possible increase in actuarial assumption Concept (xbrli:durationItemType) For Period bce:DurationofReasonablyPossibleIncreaseinActuarialAssumption
1355 2424409 - Disclosure - Post-employee benefit plans - Post-Employment Benefit Plan Assets (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansPostEmploymentBenefitPlanAssetsDetails
1356 Disclosure of fair value of plan assets [table] Table

*

*

 ifrs-full:DisclosureOfFairValueOfPlanAssetsTable
1357 Range [axis] Axis ifrs-full:RangeAxis
1358 Ranges [member] Member ifrs-full:RangesMember
1359 Bottom of range Member ifrs-full:BottomOfRangeMember
1360 Top of range Member ifrs-full:TopOfRangeMember
1361 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1362 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1363 DB pension Member bce:PensionPlansMember
1364 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1365 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1366 Canadian Member ifrs-full:CountryOfDomicileMember
1367 Foreign Member ifrs-full:ForeignCountriesMember
1368 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1369 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1370 Debt securities, excluding money market Member bce:DebtSecuritiesExcludingMoneyMarketFundsMember
1371 Money market Member bce:MoneyMarketFunds1Member
1372 Private equities Member bce:PrivateEquityFunds1Member
1373 Hedge funds Member ifrs-full:HedgeFundInvestmentsMember
1374 Real estate Member bce:RealEstate1Member
1375 Other Member bce:OtherFundInvestmentsMember
1376 Disclosure of fair value of plan assets [line items] LineItems ifrs-full:DisclosureOfFairValueOfPlanAssetsLineItems
1377 Equity securities, weighted average target allocation Concept (Percent) For Period bce:EquityInstrumentsAmountContributedToFairValueOfPlanAssetsTargetAllocationPercentage
1378 Debt securities, weighted average target allocation Concept (Percent) For Period bce:DebtInstrumentsAmountContributedToFairValueOfPlanAssetsTargetAllocationPercentage
1379 Alternative investments, weighted average target allocation Concept (Percent) For Period bce:InvestmentFundsAmountContributedToFairValueOfPlanAssetsTargetAllocationPercentage
1380 Equity securities, total plan assets fair value percent Concept (Percent) As Of bce:EquityInstrumentsAmountContributedToFairValueOfPlanAssetsAllocationPercentage
1381 Debt securities, total plan assets fair value percent Concept (Percent) As Of bce:DebtInstrumentsAmountContributedToFairValueOfPlanAssetsAllocationPercentage
1382 Alternative investments, total plan asset fair value percent Concept (Percent) As Of bce:InvestmentFundsAmountContributedToFairValueOfPlanAssetsAllocationPercentage
1383 Total plan assets fair value percent Concept (Percent) As Of bce:PlanAssetsAtFairValueAllocationPercentage
1384 Equity securities Concept (Monetary) As Of Debit ifrs-full:EquityInstrumentsAmountContributedToFairValueOfPlanAssets
1385 Debt securities Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsAmountContributedToFairValueOfPlanAssets
1386 Alternative investments Concept (Monetary) As Of Debit ifrs-full:InvestmentFundsAmountContributedToFairValueOfPlanAssets
1387 Plan assets, at fair value Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1388 Equity securities included in total plan assets Concept (Monetary) As Of Debit bce:EquityInvestmentsEntitysOwnFinancialInstrumentsIncludedInFairValueOfPlanAssets
1389 Equity securities percent included in total plan assets Concept (Percent) As Of bce:EquityInvestmentsPercentOfEntitysOwnFinancialInstrumentsIncludedInFairValueOfPlanAssets
1390 Debt securities included in total plan assets Concept (Monetary) As Of Debit bce:DebtInvestmentsEntitysOwnFinancialInstrumentsIncludedInFairValueOfPlanAssets
1391 Debt securities percent included in total plan assets Concept (Percent) As Of bce:DebtInvestmentsPercentOfEntitysOwnFinancialInstrumentsIncludedInFairValueOfPlanAssets
1392 Alternative investments included in total plan assets Concept (Monetary) As Of Debit bce:InvestmentFundsEntitysOwnFinancialInstrumentsIncludedInFairValueOfPlanAssets
1393 Alternative investments percent included in total plan assets Concept (Percent) As Of bce:InvestmentFundsPercentOfEntitysOwnFinancialInstrumentsIncludedInFairValueOfPlanAssets
1394 Defined benefit obligation hedged Concept (Monetary) For Period Credit bce:DefinedBenefitObligationHedged
1395 2424410 - Disclosure - Post-employee benefit plans - Disclosure of Contributions to Post-Employment Benefit Plans (Details) Network

*

*

 http://www.bce.ca/role/PostEmployeeBenefitPlansDisclosureOfContributionsToPostEmploymentBenefitPlansDetails
1396 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1397 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1398 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1399 Plan assets Member ifrs-full:PlanAssetsMember
1400 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1401 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1402 DB pension Member bce:PensionPlansMember
1403 OPEBs Member bce:OtherPostretirementBenefitsPlanMember
1404 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1405 Contributions, defined benefit plan Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1406 Contributions, defined contribution plan Concept (Monetary) For Period Credit bce:ContributionsToPlanByEmployerNetDefinedContributionPlan
1407 Voluntary contributions Concept (Monetary) For Period Debit bce:DiscretionaryContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1408 Estimate of contributions expected to be paid to plan for next annual reporting period, defined benefit plan Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1409 Estimated of contributions expected to be paid to plan for next annual reporting period, defined contribution plan Concept (Monetary) For Period Credit bce:DefinedContributionPlansEstimateOfContributionsExpectedToBePaidToPlanForNextAnnualReportingPeriod
1410 2425402 - Disclosure - Other non-current liabilities (Details) Network

*

*

 http://www.bce.ca/role/OtherNonCurrentLiabilitiesDetails
1411 Implied Table Table

*

*

 implied:Table
1412 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1413 Long-term disability benefits obligation Concept (Monetary) As Of Credit bce:NoncurrentLongtermDisabilityBenefitsObligation
1414 Provisions Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
1415 CRTC deferral account obligation Concept (Monetary) As Of Credit bce:NoncurrentDeferredAccountObligation
1416 CRTC tangible benefits obligation Concept (Monetary) As Of Credit bce:NoncurrentTangibleBenefitsObligation
1417 Other Concept (Monetary) As Of Credit bce:OtherNoncurrentLiabilitiesOther
1418 Total other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
1419 2426402 - Disclosure - Financial and capital management - Fair Value Details of Financial Instruments Measured at Amortized Cost (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementFairValueDetailsOfFinancialInstrumentsMeasuredAtAmortizedCostDetails
1420 Disclosure of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFinancialLiabilitiesTable
1421 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1422 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1423 Financial liabilities at amortised cost, category Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1424 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1425 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1426 CRTC tangible benefits obligation Member bce:TangibleBenefitsObligationMember
1427 CRTC deferral account obligation Member bce:DeferralAccountObligationMember
1428 Debt securities, finance leases and other debt Member bce:DebenturesFinanceLeasesandOtherDebtMember
1429 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1430 CARRYING VALUE Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1431 FAIR VALUE Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
1432 2426403 - Disclosure - Financial and capital management - Financial Instruments Measured at Fair Value (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementFinancialInstrumentsMeasuredAtFairValueDetails
1433 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1434 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1435 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1436 Publicly-traded and privately-held investments Member ifrs-full:OtherEquitySecuritiesMember
1437 Derivative financial instruments Member ifrs-full:DerivativesMember
1438 Other Member bce:OtherNoncurrentAssets1Member
1439 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1440 Liabilities [member] Member ifrs-full:LiabilitiesMember
1441 Derivative financial instruments Member ifrs-full:DerivativesMember
1442 MLSE financial liability Member bce:RepurchaseObligationOfTrustMember
1443 Other Member bce:OtherNonCurrentLiabilitiesMember
1444 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1445 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1446 QUOTED PRICES IN ACTIVE MARKETS FOR IDENTICAL ASSETS (LEVEL 1) Member ifrs-full:Level1OfFairValueHierarchyMember
1447 OBSERVABLE MARKET DATA (LEVEL 2) Member ifrs-full:Level2OfFairValueHierarchyMember
1448 NON-OBSERVABLE MARKET INPUTS (LEVEL 3) Member ifrs-full:Level3OfFairValueHierarchyMember
1449 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1450 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1451 Assets (liabilities) Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
1452 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1453 Repurchase obligation of trust ownership percentage Concept (Percent) As Of bce:RepurchaseObligationOfTrustOwnershipPercentage
1454 2426404 - Disclosure - Financial and capital management - Change in Allowance for Doubtful Accounts (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementChangeInAllowanceForDoubtfulAccountsDetails
1455 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1456 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1457 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1458 Trade receivables Member ifrs-full:TradeReceivablesMember
1459 Contract assets Member ifrs-full:ContractAssetsMember
1460 Current contract assets Member bce:CurrentContractAssetsMember
1461 Noncurrent contract assets Member bce:NoncurrentContractAssetsMember
1462 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
1463 New IFRSs [member] Member ifrs-full:NewIFRSsMember
1464 IFRS 9 Member bce:IFRS9Member
1465 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1466 Reconciliation of changes in allowance account for credit losses of financial assets [abstract] Abstract ifrs-full:ReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsAbstract
1467 Balance, January 1 Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1468 Additions Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1469 Usage Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1470 Balance, December 31 Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1471 2426405 - Disclosure - Financial and capital management - Details on Trade Receivables Not Impaired (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementDetailsOnTradeReceivablesNotImpairedDetails
1472 Disclosure of internal credit grades [table] Table

*

*

 ifrs-full:DisclosureOfInternalCreditExposuresTable
1473 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1474 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1475 Loan secured by trade receivables Member ifrs-full:TradeReceivablesMember
1476 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1477 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1478 Trade receivables not past due Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
1479 Trade receivables past due and not impaired Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
1480 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1481 Past due status [member] Member ifrs-full:PastDueStatusMember
1482 Under 60 days Member bce:NotLaterThanTwoMonthsMember
1483 60 to 120 days Member bce:LaterThanTwoMonthsAndNotLaterThanFourMonthsMember
1484 Over 120 days Member ifrs-full:LaterThanFourMonthsMember
1485 Disclosure of internal credit grades [line items] LineItems ifrs-full:DisclosureOfInternalCreditExposuresLineItems
1486 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1487 2426406 - Disclosure - Financial and capital management - Maturity Analysis for Recognized Financial Liabilities (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementMaturityAnalysisForRecognizedFinancialLiabilitiesDetails
1488 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
1489 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1490 Risks [member] Member ifrs-full:TypesOfRisksMember
1491 Liquidity risk Member ifrs-full:LiquidityRiskMember
1492 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1493 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1494 Gross carrying amount Member ifrs-full:GrossCarryingAmountMember
1495 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1496 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1497 Long-term debt Member bce:NonCurrentBorrowingsExcludingFinanceLeaseMember
1498 Notes payable Member bce:NotesPayablesMember
1499 Loans secured by trade receivables Member bce:LoansSecuredByTradeReceivablesMember
1500 Maturity [axis] Axis ifrs-full:MaturityAxis
1501 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1502 2019 Member ifrs-full:NotLaterThanOneYearMember
1503 2020 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1504 2021 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1505 2022 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1506 2023 Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1507 THERE- AFTER Member ifrs-full:LaterThanFiveYearsMember
1508 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1509 Long-term debt Concept (Monetary) As Of Credit bce:NonCurrentBorrowings
1510 Current borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1511 Minimum future lease payments under finance leases Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
1512 Interest payable on long-term debt, notes payable and loan secured by trade receivables Concept (Monetary) As Of Credit ifrs-full:InterestPayable
1513 Net interest receipts on cross currency basis swaps Concept (Monetary) As Of Debit ifrs-full:InterestReceivable
1514 MLSE financial liability Concept (Monetary) As Of Credit bce:NoncurrentRepurchaseObligationOfTrust
1515 Total Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1516 2426407 - Disclosure - Financial and capital management - Details on Outstanding Foreign Currency Forward Contracts and Cross Currency Basis Swaps (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementDetailsOnOutstandingForeignCurrencyForwardContractsAndCrossCurrencyBasisSwapsDetails
1517 Disclosure of detailed information about hedged items [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsTable
1518 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
1519 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
1520 Interest rate swap contract Member ifrs-full:InterestRateSwapContractMember
1521 Forward contract Member ifrs-full:ForwardContractMember
1522 Range [axis] Axis ifrs-full:RangeAxis
1523 Ranges [member] Member ifrs-full:RangesMember
1524 Top of range Member ifrs-full:TopOfRangeMember
1525 Bottom of range Member ifrs-full:BottomOfRangeMember
1526 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1527 Risks [member] Member ifrs-full:TypesOfRisksMember
1528 Interest rate risk Member ifrs-full:InterestRateRiskMember
1529 Equity price risk Member ifrs-full:EquityPriceRiskMember
1530 Currency risk Member ifrs-full:CurrencyRiskMember
1531 Maturity [axis] Axis ifrs-full:MaturityAxis
1532 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1533 Maturing in 2019 Member bce:Maturingin2019Member
1534 Maturing in 2020 - 2021 Member bce:Maturingin20202021Member
1535 Maturing in 2020 Member bce:MaturingIn2020Member
1536 Maturing in 2019 - 2020 Member bce:MaturingIn20192020Member
1537 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
1538 Hedges [member] Member ifrs-full:TypesOfHedgesMember
1539 Cash flow Member ifrs-full:CashFlowHedgesMember
1540 Economic Member bce:EconomicHedgesMember
1541 Fair value hedges Member ifrs-full:FairValueHedgesMember
1542 Hedged items [axis] Axis ifrs-full:HedgedItemsAxis
1543 Hedged items [member] Member ifrs-full:HedgedItemsMember
1544 Commercial paper Member bce:CommercialPaper1Member
1545 Anticipated transactions Member bce:AnticipatedTransactionsMember
1546 Settlement of share-based compensation plans Member bce:SettlementOfShareBasedCompensationPlansMember
1547 Position [Axis] Axis bce:Position1Axis
1548 Position [Axis] [Domain] Member bce:PositionAxisDomain
1549 Amount to receive Member bce:Long1Member
1550 Amount to pay Member bce:Short1Member
1551 Continuing involvement in derecognised financial assets by type of instrument [axis] Axis ifrs-full:ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis
1552 Types of instrument [member] Member ifrs-full:TypesOfInstrumentMember
1553 Economic - call options Member ifrs-full:PurchasedCallOptionsMember
1554 Economic - put options Member ifrs-full:WrittenPutOptionsMember
1555 Disclosure of detailed information about hedged items [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsLineItems
1556 Financial instruments designated as hedging instruments, at fair value Concept (Monetary) As Of invest:DerivativeNotionalAmount
1557 Nominal amount of hedging instrument settled Concept (Monetary) For Period Debit bce:NominalAmountOfHedgingInstrumentSettled
1558 Percentage of possible change in risk variable Concept (Percent) As Of bce:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent
1559 Reasonably possible change in risk variable impact on net earnings Concept (Monetary) As Of Credit bce:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnProfitLoss
1560 Percentage of possible change in market price Concept (Percent) For Period bce:InterestRateExposureInterestRatePercentDecrease
1561 Financial instruments designated as hedging instruments, at fair value Concept (Monetary) As Of ifrs-full:FinancialInstrumentsDesignatedAsHedgingInstrumentsAtFairValue
1562 Reasonably possible change in 10% depreciation (appreciation) of the CAD dollar impact on other comprehensive income Concept (Monetary) As Of Credit bce:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnEquity
1563 2426408 - Disclosure - Financial and capital management - Capital Management (Details) Network

*

*

 http://www.bce.ca/role/FinancialAndCapitalManagementCapitalManagementDetails
1564 Disclosure of objectives, policies and processes for managing capital [table] Table

*

*

 ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalTable
1565 Range [axis] Axis ifrs-full:RangeAxis
1566 Ranges [member] Member ifrs-full:RangesMember
1567 Bottom of range Member ifrs-full:BottomOfRangeMember
1568 Top of range Member ifrs-full:TopOfRangeMember
1569 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1570 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1571 Dividends declared Member bce:DividendsDeclaredMember
1572 Disclosure of objectives, policies and processes for managing capital [line items] LineItems ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalLineItems
1573 Target debt leverage ratio Concept (Pure) For Period bce:TargetDebtLeverageRatio
1574 Target adjusted EBITDA to net interest expense ratio Concept (Pure) For Period bce:TargetAdjustedEBITDAToNetInterestExpenseRatio
1575 Exceeded limit in internal net debt leverage ratio Concept (Pure) For Period bce:TargetDebtLeverageRatioAmountExceededBy
1576 Summary Of Key Ratios [Abstract] Abstract bce:SummaryOfKeyRatiosAbstract
1577 Net debt leverage ratio Concept (Pure) As Of bce:NetDebtLeverageRatio
1578 Adjusted EBITDA to net interest expense ratio Concept (Pure) As Of bce:AdjustedEBITDAtoNetInterestExpenseRatio
1579 Percentage of preferred shares included in debt leverage calculation Concept (Percent) For Period bce:DebtLeverageRatioPercentageOfPreferredStockIncludedInCalculation
1580 Percentage of preferred shares included in adjusted EBITDA to net interest ratio Concept (Percent) For Period bce:AdjustedEBITDAToNetInterestRatioPercentageOfPreferredStockIncludedInCalculation
1581 Approved increase in annual dividend Concept (Percent) For Period bce:ApprovedIncreaseInAnnualDividend
1582 Dividends paid, ordinary shares per share Concept (Share) As Of bce:DividendsPaidOrdinarySharesRate
1583 Dividends declared per common share (in CAD per share) Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
1584 2427402 - Disclosure - Share capital - Summary of Principal Terms of Preference Shares (Details) Network

*

*

 http://www.bce.ca/role/ShareCapitalSummaryOfPrincipalTermsOfPreferenceSharesDetails
1585 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1586 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1587 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1588 Series Q Member bce:SeriesQConvertiblePreferenceSharesMember
1589 Series R Member bce:SeriesRConvertiblePreferenceSharesMember
1590 Series S Member bce:SeriesSConvertiblePreferenceSharesMember
1591 Series T Member bce:SeriesTConvertiblePreferenceSharesMember
1592 Series Y Member bce:SeriesYConvertiblePreferenceSharesMember
1593 Series Z Member bce:SeriesZConvertiblePreferenceSharesMember
1594 Series AA Member bce:SeriesAAConvertiblePreferenceSharesMember
1595 Series AB Member bce:SeriesABConvertiblePreferenceSharesMember
1596 Series AC Member bce:SeriesACConvertiblePreferenceSharesMember
1597 Series AD Member bce:SeriesADConvertiblePreferenceSharesMember
1598 Series AE Member bce:SeriesAEConvertiblePreferenceSharesMember
1599 Series AF Member bce:SeriesAFConvertiblePreferenceSharesMember
1600 Series AG Member bce:SeriesAGConvertiblePreferenceSharesMember
1601 Series AH Member bce:SeriesAHConvertiblePreferenceSharesMember
1602 Series AI Member bce:SeriesAIConvertiblePreferenceSharesMember
1603 Series AJ Member bce:SeriesAJConvertiblePreferenceSharesMember
1604 Series AK Member bce:SeriesAKConvertiblePreferenceSharesMember
1605 Series AL Member bce:SeriesALConvertiblePreferenceSharesMember
1606 Series AM Member bce:SeriesAMConvertiblePreferenceSharesMember
1607 Series AN Member bce:SeriesANConvertiblePreferenceSharesMember
1608 Series AO Member bce:SeriesAOConvertiblePreferenceSharesMember
1609 Series AP Member bce:SeriesAPConvertiblePreferenceSharesMember
1610 Series AQ Member bce:SeriesAQConvertiblePreferenceSharesMember
1611 Series AR Member bce:SeriesARConvertiblePreferenceSharesMember
1612 Preferred shares Member ifrs-full:PreferenceSharesMember
1613 Redemption Date [Axis] Axis bce:RedemptionDateAxis
1614 Redemption Period [Domain] Member bce:RedemptionDateDomain
1615 December 31, 2021 Member bce:December312021Member
1616 March 31, 2021 Member bce:March312021Member
1617 Any Date Not A Conversion Date Member bce:AnyDateNotAConversionDateMember
1618 March 31, 2027 Member bce:March312027Member
1619 September 30, 2023 Member bce:September302023Member
1620 After March 31, 2017 And Any Date Not A Conversion Date Member bce:AfterMarch312017AndAnyDateNotAConversionDateMember
1621 After September 30, 2023 And Any Date Not A Conversion Date Member bce:AfterSeptember302023AndAnyDateNotAConversionDateMember
1622 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1623 ANNUAL DIVIDEND RATE Concept (Percent) For Period bce:AnnualDividendRate
1624 REDEMPTION PRICE (cad per share) Concept (Share) As Of bce:RedemptionPricePerShare
1625 AUTHORIZED (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1626 ISSUED (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1627 OUTSTANDING (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1628 STATED CAPITAL Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1629 Recurring redemption date term Concept (xbrli:durationItemType) For Period bce:RecurringRedemptionDateTerm
1630 2427403 - Disclosure - Share capital - Narrative (Details) Network

*

*

 http://www.bce.ca/role/ShareCapitalNarrativeDetails
1631 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1632 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1633 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1634 Preferred shares Member ifrs-full:PreferenceSharesMember
1635 Series R Member bce:SeriesRConvertiblePreferenceSharesMember
1636 Series T Member bce:SeriesTConvertiblePreferenceSharesMember
1637 Series Z Member bce:SeriesZConvertiblePreferenceSharesMember
1638 Series AA Member bce:SeriesAAConvertiblePreferenceSharesMember
1639 Series AC Member bce:SeriesACConvertiblePreferenceSharesMember
1640 Series AF Member bce:SeriesAFConvertiblePreferenceSharesMember
1641 Series AG Member bce:SeriesAGConvertiblePreferenceSharesMember
1642 Series AI Member bce:SeriesAIConvertiblePreferenceSharesMember
1643 Series AK Member bce:SeriesAKConvertiblePreferenceSharesMember
1644 Series AM Member bce:SeriesAMConvertiblePreferenceSharesMember
1645 Series AO Member bce:SeriesAOConvertiblePreferenceSharesMember
1646 Series AQ Member bce:SeriesAQConvertiblePreferenceSharesMember
1647 Series AD Member bce:SeriesADConvertiblePreferenceSharesMember
1648 Class B Member bce:ClassBSharesMember
1649 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1650 Equity [member] Member ifrs-full:EquityMember
1651 Issued capital Member ifrs-full:IssuedCapitalMember
1652 Contributed surplus Member ifrs-full:SharePremiumMember
1653 Deficit Member ifrs-full:RetainedEarningsMember
1654 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1655 Special circumstance vote per share Concept (Integer) As Of bce:SpecialCircumstanceVotePerShare
1656 Dividend rate reset term Concept (xbrli:durationItemType) For Period bce:DividendRateResetTerm
1657 Share conversion ratio Concept (Pure) As Of bce:ShareConversionRatio
1658 Annual dividend rate Concept (Percent) For Period bce:AnnualDividendRate
1659 Shares converted (in shares) Concept (Shares) For Period bce:ConversionofStockSharesConverted
1660 Number of shares outstanding (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1661 Stock repurchased during period (in shares) Concept (Shares) For Period bce:StockRepurchasedDuringPeriodShares1
1662 Repurchase of common shares Concept (Monetary) For Period Credit bce:StockRepurchasedDuringPeriodValue1
1663 2427404 - Disclosure - Share capital - Summary of Outstanding Common Shares (Details) Network

*

*

 http://www.bce.ca/role/ShareCapitalSummaryOfOutstandingCommonSharesDetails
1664 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1665 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1666 Equity [member] Member ifrs-full:EquityMember
1667 Issued capital Member ifrs-full:IssuedCapitalMember
1668 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1669 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1670 Common shares Member ifrs-full:OrdinarySharesMember
1671 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1672 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1673 AlarmForce Member bce:AlarmForceMember
1674 MTS Member bce:MTSMember
1675 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1676 NUMBER OF SHARES Abstract ifrs-full:ReconciliationOfNumberOfSharesOutstandingAbstract
1677 Number of shares beginning of period (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1678 Stated capital beginning of period Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1679 Shares issued for acquisitions (in shares) Concept (Shares) For Period bce:NumberOfSharesIssuedInBusinessCombination
1680 Shares issued for acquisitions Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAcquisitionOfSubsidiary
1681 Shares issued under employee stock option plan (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1682 Shares issued under employee stock option plan Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
1683 Repurchase of common shares (in shares) Concept (Shares) For Period bce:StockRepurchasedDuringPeriodShares1
1684 Repurchase of common shares Concept (Monetary) For Period Credit bce:StockRepurchasedDuringPeriodValue1
1685 Shares issued under ESP (in shares) Concept (Shares) For Period bce:NumberOfSharesIssuedThroughEmployeeStockPurchasePlan
1686 Shares issued under ESP Concept (Monetary) For Period Credit bce:IncreaseDecreaseThroughIssuanceOfSharesUnderEmployeeSavingsPlanEquity
1687 Number of shares end of period (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1688 Stated capital end of period Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1689 2428402 - Disclosure - Share-based payments - Share-based Payment Amounts Included in the Income Statements as Operating Costs (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsShareBasedPaymentAmountsIncludedInIncomeStatementsAsOperatingCostsDetails
1690 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1691 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1692 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1693 ESP Member bce:EmployeeSavingsPlanESPMember
1694 RSUs/PSUs Member bce:RestrictedStockUnitsRSUandPerformanceShareUnitsPSUMember
1695 Other Member bce:OtherShareBasedCompensationPlansMember
1696 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1697 Total share-based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
1698 2428403 - Disclosure - Share-based payments - Narrative (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsNarrativeDetails
1699 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1700 Range [axis] Axis ifrs-full:RangeAxis
1701 Ranges [member] Member ifrs-full:RangesMember
1702 Top of range Member ifrs-full:TopOfRangeMember
1703 Bottom of range Member ifrs-full:BottomOfRangeMember
1704 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1705 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1706 ESP Member bce:EmployeeSharePurchasePlanESPMember
1707 RSUs/PSUs Member bce:RestrictedStockUnitsRSUandPerformanceShareUnitsPSUMember
1708 DSP Member bce:DeferredSharePlanDSPMember
1709 DSU Member bce:DeferredStockUnitsDSUMember
1710 Stock Options Member bce:EmployeeStockOption1Member
1711 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1712 Maximum employee contribution rate Concept (Percent) As Of bce:ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate1
1713 Maximum employer contribution rate Concept (Percent) For Period bce:ShareBasedPaymentArrangementEmployerMatchingContributionPercentofMatch
1714 Award vesting period Concept (xbrli:durationItemType) For Period bce:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod2
1715 Number of shares authorized (in shares) Concept (Shares) As Of bce:ShareBasedCompensationArrangementBySharebasedPaymentAwardNumberofSharesAuthorized1
1716 Liabilities from share-based payment transactions Concept (Monetary) As Of Credit ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
1717 Award exercise period Concept (xbrli:durationItemType) For Period bce:SharebasedCompensationArrangementBySharebasedPaymentAwardExercisePeriod
1718 Percent of employee compensation paid in DSUs after minimum share ownership requirement Concept (Percent) For Period bce:ShareBasedPaymentArrangementPercentofEmployeeCompensationPaidinOtherEquityInstrumentsAfterMinimumShareOwnershipRequirement
1719 2428404 - Disclosure - Share-based payments - ESP Option Activity (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsEspOptionActivityDetails
1720 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1721 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1722 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1723 ESP Member bce:EmployeeSharePurchasePlanESPMember
1724 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1725 Beginning balance, outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1726 Contributions (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1727 Dividends credited (in shares) Concept (Decimal) For Period bce:NumberOfOtherEquityInstrumentsDividendsCreditedShareBasedPaymentArrangement
1728 Vested (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1729 Forfeited (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1730 Ending balance, outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1731 Weighted average fair value at measurement date, other equity instruments granted Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1732 2428405 - Disclosure - Share-based payments - Outstanding RSUs/PSUs Activity (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsOutstandingRsusPsusActivityDetails
1733 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1734 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1735 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1736 RSUs/PSUs Member bce:RestrictedStockUnitsRSUandPerformanceShareUnitsPSUMember
1737 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1738 Beginning balance, outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1739 Granted (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1740 Dividends credited (in shares) Concept (Decimal) For Period bce:NumberOfOtherEquityInstrumentsDividendsCreditedShareBasedPaymentArrangement
1741 Settled (in shares) Concept (Decimal) For Period bce:NumberOfOtherEquityInstrumentsSettledInShareBasedPaymentArrangement
1742 Forfeited (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1743 Ending balance, outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1744 Vested (in shares) Concept (Shares) As Of bce:NumberOfOtherEquityInstrumentsVestedInShareBasedPaymentArrangement
1745 Weighted average fair value at measurement date, other equity instruments granted Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1746 2428406 - Disclosure - Share-based payments - Outstanding DSUs Activity (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsOutstandingDsusActivityDetails
1747 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1748 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1749 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1750 Deferred Stock Units (DSU) Member bce:DeferredStockUnitsDSUMember
1751 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1752 Beginning balance, outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1753 Issued (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1754 Settlement of RSUs/PSUs (in shares) Concept (Decimal) For Period bce:NumberOfOtherEquityInstrumentsIssuedinSettlementofRestrictedStockUnitsandPerformanceShareUnitsInShareBasedPaymentArrangement
1755 Dividends credited (in shares) Concept (Decimal) For Period bce:NumberOfOtherEquityInstrumentsDividendsCreditedShareBasedPaymentArrangement
1756 Settled (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1757 Ending balance, outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1758 Weighted average fair value at measurement date, other equity instruments granted Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1759 2428407 - Disclosure - Share-based payments - Outstanding Stock Options (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsOutstandingStockOptionsDetails
1760 Implied Table Table

*

*

 implied:Table
1761 Share-based Payment Arrangements [Abstract] Abstract bce:SharebasedPaymentArrangementsAbstract
1762 Outstanding, beginning balance (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1763 Granted (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1764 Exercised (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1765 Forfeited (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1766 Outstanding, ending balance (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1767 Exercisable (in shares) Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
1768 Weighted average exercise price of share options outstanding, beginning balance (CAD per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1769 Weighted average exercise price of share options granted (CAD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
1770 Weighted average exercise price of share options exercised (CAD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
1771 Weighted average exercise price of share options forfeited (CAD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
1772 Weighted average exercise price of share options outstanding, ending balance (CAD per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1773 Weighted average exercise price of share options exercisable (CAD per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
1774 Weighted average share price, share options exercised (CAD per share) Concept (Share) For Period bce:WeightedAverageSharePriceShareOptionsExercised1
1775 2428408 - Disclosure - Share-based payments - Stock Options Exercise Prices and Weighted Average Remaining Life (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsStockOptionsExercisePricesAndWeightedAverageRemainingLifeDetails
1776 Disclosure of number and weighted average remaining contractual life of outstanding share options [table] Table

*

*

 ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsTable
1777 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
1778 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
1779 $40-$49 Member bce:ExercisePriceRangeTwoMember
1780 $50-$59 Member bce:ExercisePriceRangeThreeMember
1781 $60 & above Member bce:ExercisePriceRangeFourMember
1782 Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] LineItems ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsLineItems
1783 NUMBER (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1784 WEIGHTED AVERAGE REMAINING LIFE (YEARS) Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
1785 WEIGHTED AVERAGE EXERCISE PRICE ($) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1786 2428408 - Disclosure - Share-based payments - Stock Options Exercise Prices and Weighted Average Remaining Life (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsStockOptionsExercisePricesAndWeightedAverageRemainingLifeDetails
1787 Disclosure of range of exercise prices of outstanding share options [table] Table

*

*

 ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
1788 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
1789 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
1790 $40-$49 Member bce:ExercisePriceRangeTwoMember
1791 $50-$59 Member bce:ExercisePriceRangeThreeMember
1792 $60 & above Member bce:ExercisePriceRangeFourMember
1793 Range [axis] Axis ifrs-full:RangeAxis
1794 Ranges [member] Member ifrs-full:RangesMember
1795 Bottom of range Member ifrs-full:BottomOfRangeMember
1796 Top of range Member ifrs-full:TopOfRangeMember
1797 Disclosure of range of exercise prices of outstanding share options [line items] LineItems ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
1798 Exercise price of outstanding share options Concept (Monetary) As Of ifrs-full:ExercisePriceOfOutstandingShareOptions
1799 2428409 - Disclosure - Share-based payments - Fair Value Assumptions (Details) Network

*

*

 http://www.bce.ca/role/ShareBasedPaymentsFairValueAssumptionsDetails
1800 Implied Table Table

*

*

 implied:Table
1801 Share-based Payment Arrangements [Abstract] Abstract bce:SharebasedPaymentArrangementsAbstract
1802 Weighted average fair value per option granted (CAD per share) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1803 Weighted average share price (CAD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageSharePriceShareOptionsGranted
1804 Weighted average exercise price (CAD per share) Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
1805 Dividend yield Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1806 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1807 Risk-free interest rate Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
1808 Expected life (years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1809 2429402 - Disclosure - Additional cash flow information (Details) Network

*

*

 http://www.bce.ca/role/AdditionalCashFlowInformationDetails
1810 Disclosure of reconciliation of liabilities arising from financing activities [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable
1811 Liabilities arising from financing activities [axis] Axis ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
1812 Liabilities arising from financing activities [member] Member ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
1813 DEBT DUE WITHIN ONE YEAR AND LONG-TERM DEBT Member bce:ShorttermandlongtermborrowingsMember
1814 DERIVATIVE TO HEDGE FOREIGN CURRENCY ON DEBT Member ifrs-full:AssetsHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember
1815 DIVIDENDS PAYABLE Member bce:DividendsPayableMember
1816 OTHER LIABILITIES Member bce:OtherLiabilities1Member
1817 Disclosure of reconciliation of liabilities arising from financing activities [line items] LineItems ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems
1818 Changes in liabilities arising from financing activities [abstract] Abstract ifrs-full:ChangesInLiabilitiesArisingFromFinancingActivitiesAbstract
1819 Beginning balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1820 Cash flows used in financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
1821 (Decrease) increase in notes payable Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings
1822 Issue of long-term debt Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
1823 Repayment of long-term debt Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
1824 Cash dividends paid on common and preferred shares Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
1825 Cash dividends paid by subsidiaries to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
1826 Other financing activities Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
1827 Total cash flows from (used in) financing activities excluding equity Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInLiabilitiesArisingFromFinancingActivities
1828 Non-cash changes arising from Abstract bce:NoncashFinancingItemsAbstract
1829 Finance lease additions Concept (Monetary) For Period Debit bce:OtherAdjustmentsForNonCashItemsFinanceLeaseLiabilities
1830 Dividends declared on common and preferred shares Concept (Monetary) For Period Debit bce:OtherAdjustmentsForNonCashItemsDividendsPaidtoEquityHoldersofParent
1831 Dividends declared by subsidiaries to non-controlling interests Concept (Monetary) For Period Debit bce:OtherAdjustmentsForNonCashItemsDividendsPaidtoNoncontrollingInterest
1832 Effect of changes in foreign exchange rates Concept (Monetary) For Period Debit bce:OtherAdjustmentsForNonCashItemsEffectofChangesinForeignExchangeRates
1833 Business acquisitions Concept (Monetary) For Period Debit bce:OtherAdjustmentsForNonCashItemsBusinessAcquisitions
1834 Other Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForWhichCashEffectsAreInvestingOrFinancingCashFlow
1835 Total non-cash changes Concept (Monetary) For Period Debit bce:AdjustmentsForNonCashItemsClassifiedasFinancingActivities
1836 Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1837 2430402 - Disclosure - Remaining performance obligations (Details) Network

*

*

 http://www.bce.ca/role/RemainingPerformanceObligationsDetails
1838 Disclosure of performance obligations [table] Table

*

*

 ifrs-full:DisclosureOfPerformanceObligationsTable
1839 Segments [axis] Axis ifrs-full:SegmentsAxis
1840 Segments [member] Member ifrs-full:SegmentsMember
1841 Wireline Member bce:BellWirelineMember
1842 Wireless Member bce:WirelessMember
1843 Maturity [axis] Axis ifrs-full:MaturityAxis
1844 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1845 2019 Member ifrs-full:NotLaterThanOneYearMember
1846 2020 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1847 2021 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1848 2022 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1849 2023 Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1850 THEREAFTER Member ifrs-full:LaterThanFiveYearsMember
1851 Disclosure of performance obligations [line items] LineItems ifrs-full:DisclosureOfPerformanceObligationsLineItems
1852 Remaining performance obligations Concept (Monetary) As Of Credit bce:RevenueRemainingPerformanceObligation1
1853 2431402 - Disclosure - Commitments and contingencies (Details) Network

*

*

 http://www.bce.ca/role/CommitmentsAndContingenciesDetails
1854 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
1855 Maturity [axis] Axis ifrs-full:MaturityAxis
1856 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1857 2019 Member ifrs-full:NotLaterThanOneYearMember
1858 2020 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1859 2021 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1860 2022 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1861 2023 Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1862 THERE- AFTER Member ifrs-full:LaterThanFiveYearsMember
1863 Range [axis] Axis ifrs-full:RangeAxis
1864 Ranges [member] Member ifrs-full:RangesMember
1865 Bottom of range Member ifrs-full:BottomOfRangeMember
1866 Top of range Member ifrs-full:TopOfRangeMember
1867 Disclosure of contingent liabilities [line items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
1868 Operating leases Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1869 Commitments for property, plant and equipment and intangible assets Concept (Monetary) As Of Credit bce:Contractualcommitmentsforacquisitionofpropertyplantandequipmentandintangibleassets
1870 Purchase obligations Concept (Monetary) As Of Credit bce:Contractualcommitmentsforpurchaseobligations
1871 Total Concept (Monetary) As Of Credit bce:Contractualcommitments
1872 Operating leases, term of contract Concept (xbrli:durationItemType) For Period bce:LesseeLeasingArrangementsOperatingLeasesTermOfContract1
1873 Operating leases, rent expense Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
1874 2432402 - Disclosure - Related party transactions - Summary of Significant Subsidiaries (Details) Network

*

*

 http://www.bce.ca/role/RelatedPartyTransactionsSummaryOfSignificantSubsidiariesDetails
1875 Disclosure of transactions between related parties [table] Table

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*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1876 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1877 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1878 SUBSIDIARY Member ifrs-full:SubsidiariesMember
1879 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1880 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1881 Bell Canada Member bce:BellCanadaMember
1882 Bell Mobility Member bce:BellMobilityMember
1883 Bell Media Member bce:BellMediaMember
1884 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1885 OWNERSHIP PERCENTAGE Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1886 2432403 - Disclosure - Related party transactions - Narrative (Details) Network

*

*

 http://www.bce.ca/role/RelatedPartyTransactionsNarrativeDetails
1887 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1888 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1889 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1890 Associates and Joint Arrangements Member bce:AssociatesAndJointArrangementsMember
1891 Master Trust Fund Member bce:MasterTrustFundMember
1892 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1893 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1894 Bell Canada Member bce:BellCanadaMember
1895 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1896 Recognized revenue, related parties Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
1897 Incurred expenses, related parties Concept (Monetary) For Period Debit ifrs-full:ServicesReceivedRelatedPartyTransactions
1898 2432404 - Disclosure - Related party transactions - Compensation of Key Management Personnel (Details) Network

*

*

 http://www.bce.ca/role/RelatedPartyTransactionsCompensationOfKeyManagementPersonnelDetails
1899 Implied Table Table

*

*

 implied:Table
1900 Related Party [Abstract] Abstract bce:RelatedPartyAbstract
1901 Wages, salaries, fees and related taxes and benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1902 Post-employment benefit plans and OPEBs cost Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
1903 Share-based compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1904 Key management personnel and board of directors compensation expense Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1905 2433402 - Disclosure - Significant partly-owned subsidiaries - Summarized Statements of Financial Position (Details) Network

*

*

 http://www.bce.ca/role/SignificantPartlyOwnedSubsidiariesSummarizedStatementsOfFinancialPositionDetails
1906 Disclosure of subsidiaries [table] Table

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*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1907 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1908 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1909 CTV Specialty hedge Member bce:CTVSpecialtyMember
1910 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1911 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1912 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1913 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
1914 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1915 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1916 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1917 Total equity attributable to BCE shareholders Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
1918 NCI Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
1919 Proportion of ownership interests held by non-controlling interests Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
1920 Net assets Concept (Monetary) As Of Debit bce:NetAssetsAttributabletoNoncontrollingInterest
1921 2433403 - Disclosure - Significant partly-owned subsidiaries - Selected Income and Cash Flow Information (Details) Network

*

*

 http://www.bce.ca/role/SignificantPartlyOwnedSubsidiariesSelectedIncomeAndCashFlowInformationDetails
1922 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1923 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1924 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1925 Subsidiaries with material non-controlling interests Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
1926 CTV Specialty hedge Member bce:CTVSpecialtyMember
1927 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1928 Total operating revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1929 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1930 Net earnings attributable to NCI Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
1931 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
1932 Total comprehensive income attributable to NCI Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
1933 Cash dividends paid to NCI Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
1934 2488402 - Disclosure - Adoption of IFRS 15 - Consolidated Income Statements (Details) Network

*

*

 http://www.bce.ca/role/AdoptionOfIfrs15ConsolidatedIncomeStatementsDetails
1935 Disclosure of initial application of standards or interpretations [table] Table

*

*

 ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
1936 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1937 Currently stated [member] Member ifrs-full:RestatedMember
1938 2017 as previously reported Member ifrs-full:PreviouslyStatedMember
1939 IFRS 15 impacts Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
1940 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
1941 New IFRSs [member] Member ifrs-full:NewIFRSsMember
1942 IFRS 15 Member bce:IFRS15Member
1943 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
1944 Total operating revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1945 Operating costs Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
1946 Severance, acquisition and other costs Concept (Monetary) For Period Debit bce:TerminationBenefitsExpenseAcquisitionRelatedCostsAndOtherCosts
1947 Depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
1948 Amortization Concept (Monetary) For Period Debit ifrs-full:AmortisationExpense
1949 Finance costs Abstract ifrs-full:InterestCostsAbstract
1950 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1951 Interest on post-employment benefit obligations Concept (Monetary) For Period Debit bce:PostEmploymentBenefitExpenseDefinedBenefitPlansInterest
1952 Other expense Concept (Monetary) For Period Credit ifrs-full:OtherGainsLosses
1953 Income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1954 Net earnings (losses) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1955 Net earnings attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
1956 Common shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
1957 Preferred shareholders Concept (Monetary) For Period Credit bce:ProfitLossAttributableToPreferenceEquityHoldersOfParentEntity
1958 Non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
1959 Net earnings (losses) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1960 Net earnings per common share - basic (in cad per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
1961 Net earnings per common share - diluted (in cad per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
1962 Average number of common shares outstanding - basic (millions) (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
1963 2488403 - Disclosure - Adoption of IFRS 15 - Consolidated Statement of Financial Position (Details) Network

*

*

 http://www.bce.ca/role/AdoptionOfIfrs15ConsolidatedStatementOfFinancialPositionDetails
1964 Disclosure of initial application of standards or interpretations [table] Table

*

*

 ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
1965 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
1966 New IFRSs [member] Member ifrs-full:NewIFRSsMember
1967 IFRS 15 Member bce:IFRS15Member
1968 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1969 Currently stated [member] Member ifrs-full:RestatedMember
1970 2017 as previously reported Member ifrs-full:PreviouslyStatedMember
1971 IFRS 15 impacts Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
1972 Reclassifications Member bce:IncreasedecreaseduetoapplicationofIFRS15PresentationAdjustmentMember
1973 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1974 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1975 Preferred shares Member ifrs-full:PreferenceSharesMember
1976 Common shares Member ifrs-full:OrdinarySharesMember
1977 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
1978 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
1979 Cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
1980 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1981 Inventory Concept (Monetary) As Of Debit ifrs-full:Inventories
1982 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
1983 Contract costs Concept (Monetary) As Of Debit bce:CurrentAssetsRecognisedFromCostsToObtainOrFulfillContractsWithCustomers
1984 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
1985 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1986 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1987 Contract assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentContractAssets
1988 Contract costs Concept (Monetary) As Of Debit bce:NoncurrentAssetsRecognisedFromCostsToObtainOrFulfillContractsWithCustomers
1989 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1990 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1991 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1992 Investments in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1993 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1994 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1995 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1996 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
1997 Trade payables and other liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1998 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
1999 Interest payable Concept (Monetary) As Of Credit ifrs-full:CurrentInterestPayable
2000 Dividends payable Concept (Monetary) As Of Credit ifrs-full:CurrentDividendPayables
2001 Current tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
2002 Debt due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
2003 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
2004 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentContractLiabilities
2005 Long-term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
2006 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
2007 Post-employment benefit obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
2008 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
2009 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
2010 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2011 Shares Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
2012 Contributed surplus Concept (Monetary) As Of Credit ifrs-full:SharePremium
2013 Accumulated other comprehensive (loss) income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
2014 Deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
2015 Total equity attributable to BCE shareholders Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
2016 Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
2017 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
2018 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
2019 2488404 - Disclosure - Adoption of IFRS 15 - Reconciliation of Deficit (Details) Network

*

*

 http://www.bce.ca/role/AdoptionOfIfrs15ReconciliationOfDeficitDetails
2020 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
2021 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
2022 Currently stated [member] Member ifrs-full:RestatedMember
2023 2017 as previously reported Member ifrs-full:PreviouslyStatedMember
2024 IFRS 15 impacts Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
2025 Timing of revenue recognition Member bce:IncreaseDecreaseDuetoApplicationofIFRS15TimingofRevenueRecognitionMember
2026 Cost to obtain a contract Member bce:IncreaseDecreaseDuetoApplicationofIFRS15CosttoObtainaContractMember
2027 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
2028 New IFRSs [member] Member ifrs-full:NewIFRSsMember
2029 IFRS 15 Member bce:IFRS15Member
2030 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
2031 Deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
2032 2488405 - Disclosure - Adoption of IFRS 15 - Consolidated Statements of Cash Flows (Details) Network

*

*

 http://www.bce.ca/role/AdoptionOfIfrs15ConsolidatedStatementsOfCashFlowsDetails
2033 Disclosure of initial application of standards or interpretations [table] Table

*

*

 ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
2034 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
2035 New IFRSs [member] Member ifrs-full:NewIFRSsMember
2036 IFRS 15 Member bce:IFRS15Member
2037 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
2038 Currently stated [member] Member ifrs-full:RestatedMember
2039 2017 as previously reported Member ifrs-full:PreviouslyStatedMember
2040 IFRS 15 impacts Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
2041 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
2042 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
2043 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
2044 Income taxes Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncomeTaxExpense
2045 Net change in operating assets and liabilities Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
2046 Cash flows from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
2047 2488406 - Disclosure - Adoption of IFRS 15 - Revenue by Services and Products (Details) Network

*

*

 http://www.bce.ca/role/AdoptionOfIfrs15RevenueByServicesAndProductsDetails
2048 Disclosure of initial application of standards or interpretations [table] Table

*

*

 ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
2049 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
2050 Currently stated [member] Member ifrs-full:RestatedMember
2051 2017 as previously reported Member ifrs-full:PreviouslyStatedMember
2052 IFRS 15 impacts Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
2053 Other Member bce:IncreasedecreaseduetoapplicationofIFRS15PresentationAdjustmentMember
2054 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
2055 New IFRSs [member] Member ifrs-full:NewIFRSsMember
2056 IFRS 15 Member bce:IFRS15Member
2057 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
2058 Products and services [member] Member ifrs-full:ProductsAndServicesMember
2059 Total services Member bce:ServiceMember
2060 Wireless Member bce:ServiceWirelessMember
2061 Data Member bce:ServiceDataMember
2062 Voice Member bce:VoiceMember
2063 Media Member bce:MediaMember
2064 Other services Member bce:ServicesOtherMember
2065 Total products Member bce:Product1Member
2066 Wireless Member bce:ProductWirelessMember
2067 Data Member bce:ProductDataMember
2068 Equipment and other Member bce:EquipmentAndOtherMember
2069 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
2070 Total operating revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers

*

*