XML 117 R103.htm IDEA: XBRL DOCUMENT
v3.4.0.3

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - LEVEL 3 DERIVATIVE INSTRUMENTS (Details) CAD in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 CAD CAD / bbl CAD / MMBTU CAD / gal CAD / MWh | Dec. 31, 2014 CAD
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD (4,748) | CAD (2,364)
Level 3 |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | 54 | CAD 149
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD (2) |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MMBTU | 2.89 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MMBTU | 4.26 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MMBTU | 3.53 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | NGL |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD 8 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | NGL | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / gal | 0.21 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | NGL | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / gal | 1.28 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | NGL | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / gal | 0.87 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD (148) |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MWh | 30.00 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MWh | 73.76 |
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MWh | 53.44 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD (69) |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MMBTU | 2.04 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MMBTU | 5.69 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / MMBTU | 3.14 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD 132 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / bbl | 28.59 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / bbl | 87.40 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / bbl | 51.71 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD 3 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / gal | 0.21 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / gal | 1.67 |
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Forward price | CAD / gal | 0.74 |
Option model valuation technique | Level 3 | Commodity Options | Crude oil |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD 51 |
Option model valuation technique | Level 3 | Commodity Options | Crude oil | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Option Volatility (as a percent) | 26.00% |
Option model valuation technique | Level 3 | Commodity Options | Crude oil | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Option Volatility (as a percent) | 37.00% |
Option model valuation technique | Level 3 | Commodity Options | Crude oil | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Option Volatility (as a percent) | 32.00% |
Option model valuation technique | Level 3 | Commodity Options | NGL |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Fair value | CAD 79 |
Option model valuation technique | Level 3 | Commodity Options | NGL | Minimum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Option Volatility (as a percent) | 13.00% |
Option model valuation technique | Level 3 | Commodity Options | NGL | Maximum |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Option Volatility (as a percent) | 74.00% |
Option model valuation technique | Level 3 | Commodity Options | NGL | Weighted average price |  |
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |
Option Volatility (as a percent) | 34.00% |

X
- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given commodity price. + References No definition available. + Details
Name: | enb_FairValueAssumptionsCommodityExpectedVolatilityRate
Namespace Prefix: | enb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The forward price on the price risk forward or futures contract, such as a gas futures contract, used as an input to measure fair value. + References No definition available. + Details
Name: | enb_FairValueInputsDerivativeForwardPrice
Namespace Prefix: | enb_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
Name: | us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
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_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_MarketApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=enb_FinancialForwardCommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=enb_PhysicalForwardCommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=enb_OptionModelValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |