XML 98 R87.htm IDEA: XBRL DOCUMENT
v3.19.1

REGULATORY MATTERS - Operating Cost Capitalization (Narrative) (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Costs capitalized to Property, plant and equipment, net | Enbridge Gas Distribution |  |
Schedule of Capitalization [Line Items] |  |
Net book value of capitalized costs | $ 110 | $ 118

X
- Definition Represents the cumulative cost capitalized to property, plant and equipment. + References No definition available. + Details
Name: | enb_PropertyPlantAndEquipmentCostCapitalized
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=enb_CapitalizedCostsOfConsultingContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=enb_EnbridgeGasDistributionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |