XML 91 R77.htm IDEA: XBRL DOCUMENT
v3.4.0.3

PROPERTY, PLANT AND EQUIPMENT (Details) CAD in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2014 CAD | Mar. 31, 2014 USD ($) | Mar. 31, 2014 CAD | Dec. 31, 2015 CAD | Dec. 31, 2014 CAD
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, Plant and Equipment, Net, Total |  |  |  | CAD 64,434 | CAD 53,830
Depreciation expense |  |  |  | 1,852 | 1,461
Discontinued Operations |  |  |  |  |
Gain resulted from the cash proceeds and disposition of net liabilities held for sale |  |  |  |  | 46
Liquids Pipelines |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 52,634 | 42,763
Accumulated depreciation |  |  |  | (8,233) | (6,655)
Property, Plant and Equipment, Net, Total |  |  |  | 44,401 | 36,108
Property, plant and equipment disposed | CAD 62 |  |  |  |
Property, plant and equipment reclassified to Long-term investments | CAD 136 |  |  |  |
Liquids Pipelines | Southern Access Extension Project |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Ownership percent sold | 35.00% |  |  |  |
Gas Distribution |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 9,806 | 8,863
Accumulated depreciation |  |  |  | (2,379) | (2,256)
Property, Plant and Equipment, Net, Total |  |  |  | 7,427 | 6,607
Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 10,201 | 8,405
Accumulated depreciation |  |  |  | (2,003) | (1,505)
Property, Plant and Equipment, Net, Total |  |  |  | 8,198 | 6,900
Green Power and Transmission |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 4,794 | 4,435
Accumulated depreciation |  |  |  | (600) | (404)
Property, Plant and Equipment, Net, Total |  |  |  | 4,194 | 4,031
Energy Services |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 34 | 31
Accumulated depreciation |  |  |  | (13) | (9)
Property, Plant and Equipment, Net, Total |  |  |  | 21 | 22
Eliminations and Other |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 331 | 306
Accumulated depreciation |  |  |  | (138) | (144)
Property, Plant and Equipment, Net, Total |  |  |  | 193 | 162
Enbridge Energy Partners, L.P. |  |  |  |  |
Impairment |  |  |  |  |
impairment charges |  |  |  | CAD 96 |
Pipeline | Liquids Pipelines |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 2.70% |
Property, plant and equipment, gross |  |  |  | CAD 31,092 | 22,007
Pipeline | Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 2.70% |
Property, plant and equipment, gross |  |  |  | CAD 3,557 | 2,888
Compressors, meters and other operating equipment | Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 3.40% |
Property, plant and equipment, gross |  |  |  | CAD 3,864 | 2,957
Processing and treating plants | Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 2.50% |
Property, plant and equipment, gross |  |  |  | CAD 869 | 599
Pumping equipment, buildings, tanks and other | Liquids Pipelines |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 3.10% |
Property, plant and equipment, gross |  |  |  | CAD 14,319 | 12,230
Pumping equipment, buildings, tanks and other | Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 5.00% |
Property, plant and equipment, gross |  |  |  | CAD 275 | 246
Pumping equipment, buildings, tanks and other | Energy Services |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 3.40% |
Property, plant and equipment, gross |  |  |  | CAD 34 | 26
Gas mains, services and other | Gas Distribution |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 3.00% |
Property, plant and equipment, gross |  |  |  | CAD 8,819 | 8,427
Wind turbines, solar panels and other | Green Power and Transmission |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 4.10% |
Property, plant and equipment, gross |  |  |  | CAD 4,311 | 3,829
Power transmission | Green Power and Transmission |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 1.80% |
Property, plant and equipment, gross |  |  |  | CAD 387 | 368
Land and right-of-way | Liquids Pipelines |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 2.40% |
Property, plant and equipment, gross |  |  |  | CAD 1,221 | 1,077
Land and right-of-way | Gas Distribution |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 1.00% |
Property, plant and equipment, gross |  |  |  | CAD 85 | 84
Land and right-of-way | Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 2.30% |
Property, plant and equipment, gross |  |  |  | CAD 680 | 511
Land and right-of-way | Green Power and Transmission |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 4.20% |
Property, plant and equipment, gross |  |  |  | CAD 45 | 28
Under construction | Liquids Pipelines |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 6,002 | 7,449
Under construction | Gas Distribution |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 902 | 352
Under construction | Gas Pipelines And Processing |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | 956 | 1,204
Under construction | Green Power and Transmission |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  | CAD 51 | 210
Under construction | Energy Services |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Property, plant and equipment, gross |  |  |  |  | 5
Vehicles, office furniture, equipment and other | Eliminations and Other |  |  |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |
Weighted Average Depreciation Rate (as a percent) |  |  |  | 6.10% |
Property, plant and equipment, gross |  |  |  | CAD 331 | 306
Offshore Member | Disposed of by Sale |  |  |  |  |
Discontinued Operations |  |  |  |  |
Cash proceeds from sale of assets |  | $ 10 | CAD 11 |  |
Gain resulted from the cash proceeds and disposition of net liabilities held for sale |  | 63 | 70 |  |
Amount of disposition of net liabilities held for sale |  | $ 53 | CAD 59 |  |
Offshore Member | Held-for-sale |  |  |  |  |
Discontinued Operations |  |  |  |  |
Revenues presented as discontinued operations |  |  |  |  | CAD 4
Berthold rail facility | Enbridge Energy Partners, L.P. |  |  |  |  |
Impairment |  |  |  |  |
impairment charges |  |  |  | 80 |
Louisiana propylene pipeline | Enbridge Energy Partners, L.P. |  |  |  |  |
Impairment |  |  |  |  |
impairment charges |  |  |  | CAD 16 |

X
- Definition Represents the amount of consideration on disposition of net liabilities held for sale. + References No definition available. + Details
Name: | enb_ConsiderationOnDispositionOfNetLiabilitiesHeldForSale
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amount of cash proceeds from sale of disposal group, including those classified as components of the entity discontinued operations. + References No definition available. + Details
Name: | enb_DisposalGroupIncludingDiscontinuedOperationCashConsiderationReceived
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting that was sold. + References No definition available. + Details
Name: | enb_EquityMethodInvestmentOwnershipPercentageSold
Namespace Prefix: | enb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the weighted average depreciation rate on property, plant and equipment. + References No definition available. + Details
Name: | enb_PropertyPlantAndEquipmentWeightedAverageDepreciationRate
Namespace Prefix: | enb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of assets transferred within the segment reclassified for presentation purposes in the financial statements. + References No definition available. + Details
Name: | enb_SegmentReportingTransferOfAssetWithinSegmentsReclassified
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetImpairmentChargesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721533-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2510-110228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e1107-107759 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721673-107760 + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721673-107760 + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51659069&loc=d3e92212-112881 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Impairment -URI http://asc.fasb.org/extlink&oid=6515133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2420-110228 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.12) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721675-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.14) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e1012-107759 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721525-107759 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721523-107759 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e957-107759 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 7 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 5 + Details
Name: | us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PropertyPlantAndEquipmentGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=enb_SouthernAccessExtensionProjectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=enb_GasPipelinesAndProcessingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=enb_GreenPowerAndTransmissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=enb_EnergyServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=enb_EliminationAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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

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

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

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

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

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsHeldforsaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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