Name:	enb_AdditionalRollingPeriodOfRefundsToOrCollectionsFromCustomers
Namespace Prefix:	enb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the amount of costs permitted to be recovered under the defined benefit plan as per the rate order received from the OEB.

No definition available.

Name:	enb_DefinedBenefitPlanCostsPermittedToBeRecovered
Namespace Prefix:	enb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the cumulative cost capitalized to property, plant and equipment.

No definition available.

Name:	enb_PropertyPlantAndEquipmentCostCapitalized
Namespace Prefix:	enb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

Name:	enb_RegulatoryAssetsAndLiabilitiesLineItems
Namespace Prefix:	enb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents information pertaining to recovery period of the individual regulatory assets and liability.

No definition available.

Name:	enb_RegulatoryAssetsAndLiabilityRecoveryPeriod
Namespace Prefix:	enb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the rolling period of refunds to or collections from customers via the Quarterly Rate Adjustment Mechanism process.

No definition available.

Name:	enb_RollingPeriodOfRefundsToOrCollectionsFromCustomers
Namespace Prefix:	enb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the term for collection of costs permitted to be recovered under the defined benefit plan, in rates.

No definition available.

Name:	enb_TermForCollectionOfDefinedBenefitPlanCostsInRates
Namespace Prefix:	enb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

Name:	us-gaap_RegulatoryAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

Name:	us-gaap_RegulatoryLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	dei_LegalEntityAxis=enb_EnbridgeGasDistributionIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	us-gaap_StatementBusinessSegmentsAxis=enb_LiquidsPipelinesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=us-gaap_DeferredIncomeTaxChargesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_TollingDeferralsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_RecoverableIncomeTaxesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_PipelineFutureAbandonmentCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_TransportationRevenueAdjustmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_GasDistributionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_PurchasedGasVarianceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_PensionCostsAndOtherPostretirementBenefitPlansDefinedBenefitCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_ConstantDollarNetSalvageAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_UnabsorbedDemandCostMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_FutureRemovalAndSiteRestorationReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_SiteRestorationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	enb_RegulatedBusinessOperationsAxis=enb_TransactionServicesDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: