XML 192 R111.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Post-employee benefit plans - Interest cost (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of net defined benefit liability (asset) [line items] |  |
Total interest on post-employment benefit obligations | $ (72) | $ (81)
DB pension |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Total interest on post-employment benefit obligations | (18) | (24)
OPEBs |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Total interest on post-employment benefit obligations | $ (54) | $ (57)

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

X
- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 141 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_141_b&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_DefinedBenefitPlansAxis=bce_PensionPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_DefinedBenefitPlansAxis=bce_OtherPostRetirementBenefitsPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |