XML 48 R34.htm IDEA: XBRL DOCUMENT
v3.8.0.1

REVENUE (Details) $ in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 CAD ($) | Mar. 31, 2018 USD ($) | Mar. 31, 2017 CAD ($)
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | $ 6,393 |  |
Revenues | 12,726 |  | $ 11,146
Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 718 |  |
Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 5,675 |  |
Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 3,249 |  |
Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 166 |  |
Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 205 |  |
Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 1,926 |  |
Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 154 |  |
Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 693 |  |
Revenues | 6,575 |  |
Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | (242) |  |
Liquids Pipelines |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,098 |  |
Liquids Pipelines | Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Liquids Pipelines | Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,098 |  |
Gas Transmission and Midstream |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 1,910 |  |
Gas Transmission and Midstream | Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 693 |  |
Gas Transmission and Midstream | Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 1,217 |  |
Gas Distribution |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,231 |  |
Gas Distribution | Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 25 |  |
Gas Distribution | Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,206 |  |
Green Power and Transmission |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 154 |  |
Green Power and Transmission | Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Green Power and Transmission | Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 154 |  |
Energy Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Energy Services | Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Energy Services | Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Liquids Pipelines |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,098 |  |
Revenues | 1,909 |  | 2,155
Business segments | Liquids Pipelines | Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,058 |  |
Business segments | Liquids Pipelines | Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 40 |  |
Business segments | Liquids Pipelines | Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Liquids Pipelines | Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Liquids Pipelines | Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Liquids Pipelines | Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | 0 |  |
Business segments | Liquids Pipelines | Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | (269) |  |
Business segments | Gas Transmission and Midstream |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 1,910 |  |
Revenues | 1,937 |  |
Business segments | Gas Transmission and Midstream | Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 952 |  |
Business segments | Gas Transmission and Midstream | Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 60 |  |
Business segments | Gas Transmission and Midstream | Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 205 |  |
Business segments | Gas Transmission and Midstream | Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Gas Transmission and Midstream | Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Gas Transmission and Midstream | Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 693 |  |
Revenues | 0 |  |
Business segments | Gas Transmission and Midstream | Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 25 |  |
Business segments | Gas Distribution |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 2,231 |  |
Revenues | 2,237 |  |
Business segments | Gas Distribution | Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 239 |  |
Business segments | Gas Distribution | Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 66 |  |
Business segments | Gas Distribution | Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Gas Distribution | Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 1,926 |  |
Business segments | Gas Distribution | Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Gas Distribution | Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | 0 |  |
Business segments | Gas Distribution | Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2 |  |
Business segments | Green Power and Transmission |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 154 |  |
Revenues | 157 |  | 137
Business segments | Green Power and Transmission | Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Green Power and Transmission | Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Green Power and Transmission | Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Green Power and Transmission | Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Green Power and Transmission | Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 154 |  |
Business segments | Green Power and Transmission | Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | 0 |  |
Business segments | Green Power and Transmission | Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 3 |  |
Business segments | Energy Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | 6,632 |  |
Business segments | Energy Services | Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Energy Services | Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Energy Services | Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Energy Services | Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Energy Services | Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Business segments | Energy Services | Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | 6,575 |  |
Business segments | Energy Services | Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 0 |  |
Intersegment Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | (143) | $ 0 |
Intersegment Eliminations | Liquids Pipelines |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 80 |  |
Intersegment Eliminations | Gas Transmission and Midstream |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2 |  |
Intersegment Eliminations | Gas Distribution |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 4 |  |
Intersegment Eliminations | Green Power and Transmission |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 0 |  |
Intersegment Eliminations | Energy Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 57 |  |
Consolidation, Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | (146) |  | $ (98)
Consolidation, Eliminations | Transportation revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Consolidation, Eliminations | Storage and Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Consolidation, Eliminations | Gas Gathering and Processing Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Consolidation, Eliminations | Gas Distribution Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Consolidation, Eliminations | Electricity and Transmission Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Consolidation, Eliminations | Commodity sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contract with customer | 0 |  |
Revenues | 0 |  |
Consolidation, Eliminations | Other Revenue |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ (3) |  |

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

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 32 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_TransportationRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_StorageandOtherRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_GasGatheringandProcessingRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_GasDistributionRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_ElectricityandTransmissionRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_CommoditySalesRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=enb_OtherRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_ConsolidationEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |