XML 129 R129.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - NOTIONAL PRINCIPAL OR QUANTITY INFORMATION (Details) € in Millions, ¥ in Millions, £ in Millions, MWh in Millions, MMBbls in Millions, Bcf in Millions, $ in Millions, $ in Millions | Dec. 31, 2019 USD ($) MWh Bcf MMBbls | Dec. 31, 2019 CAD ($) MWh Bcf MMBbls | Dec. 31, 2019 EUR (€) MWh Bcf MMBbls | Dec. 31, 2019 JPY (¥) MWh Bcf MMBbls | Dec. 31, 2019 GBP (£) MWh Bcf MMBbls | Dec. 31, 2018 USD ($) MWh Bcf MMBbls | Dec. 31, 2018 CAD ($) MWh Bcf MMBbls | Dec. 31, 2018 EUR (€) MWh Bcf MMBbls | Dec. 31, 2018 JPY (¥) MWh Bcf MMBbls | Dec. 31, 2018 GBP (£) MWh Bcf MMBbls
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Foreign exchange contracts - United States dollar or GBP or Japanese yen forwards - purchase |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional principal | $ 1,121 |  | € 0 | ¥ 0 |  |  |  |  |  |
2021 notional principal | 0 |  | 0 | 0 |  |  |  |  |  |
2022 notional principal | 0 |  | 0 | 72,500 |  |  |  |  |  |
2023 notional principal | 0 |  | 0 | 0 |  |  |  |  |  |
2024 notional principal | 0 |  | 0 | 0 |  |  |  |  |  |
Thereafter notional principal | 0 |  | 0 | 0 |  |  |  |  |  |
Total notional principal | 1,121 |  | 0 | ¥ 72,500 |  | $ 926 |  | € 226 | ¥ 52,662 |
Foreign exchange contracts - United States dollar or GBP forwards - sell |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional principal | 5,631 |  | 23 |  | £ 94 |  |  |  |  |
2021 notional principal | 4,946 |  | 94 |  | 27 |  |  |  |  |
2022 notional principal | 5,182 |  | 94 |  | 28 |  |  |  |  |
2023 notional principal | 1,804 |  | 92 |  | 29 |  |  |  |  |
2024 notional principal | 1,856 |  | 91 |  | 30 |  |  |  |  |
Thereafter notional principal | 0 |  | 515 |  | 90 |  |  |  |  |
Total notional principal | $ 19,419 |  | € 909 |  | £ 298 | $ 19,075 |  | € 909 |  | £ 318
Interest rate contracts - short-term borrowings |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional principal |  | $ 6,090 |  |  |  |  |  |  |  |
2021 notional principal |  | 4,090 |  |  |  |  |  |  |  |
2022 notional principal |  | 400 |  |  |  |  |  |  |  |
2023 notional principal |  | 48 |  |  |  |  |  |  |  |
2024 notional principal |  | 35 |  |  |  |  |  |  |  |
Thereafter notional principal |  | 121 |  |  |  |  |  |  |  |
Total notional principal |  | 10,784 |  |  |  |  | $ 19,664 |  |  |
Interest rate contract - long term debt - Pay Fixed Rate |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional principal |  | 3,533 |  |  |  |  |  |  |  |
2021 notional principal |  | 1,569 |  |  |  |  |  |  |  |
2022 notional principal |  | 0 |  |  |  |  |  |  |  |
2023 notional principal |  | 0 |  |  |  |  |  |  |  |
2024 notional principal |  | 0 |  |  |  |  |  |  |  |
Thereafter notional principal |  | 0 |  |  |  |  |  |  |  |
Total notional principal |  | 5,102 |  |  |  |  | 8,558 |  |  |
Equity contracts |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional principal |  | 20 |  |  |  |  |  |  |  |
2021 notional principal |  | 34 |  |  |  |  |  |  |  |
2022 notional principal |  | 0 |  |  |  |  |  |  |  |
2023 notional principal |  | 0 |  |  |  |  |  |  |  |
2024 notional principal |  | 0 |  |  |  |  |  |  |  |
Thereafter notional principal |  | 0 |  |  |  |  |  |  |  |
Total notional principal |  | $ 54 |  |  |  |  | $ 55 |  |  |
Commodity contracts | Natural gas |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional quantity (in bcf, bbl or mbbl) | Bcf | (33) | (33) | (33) | (33) | (33) |  |  |  |  |
2021 notional quantity (in bcf, bbl or mbbl) | Bcf | 14 | 14 | 14 | 14 | 14 |  |  |  |  |
2022 notional quantity (in bcf, bbl or mbbl) | Bcf | 15 | 15 | 15 | 15 | 15 |  |  |  |  |
2023 notional quantity (in bcf, bbl or mbbl) | Bcf | 3 | 3 | 3 | 3 | 3 |  |  |  |  |
2024 notional quantity (in bcf, bbl or mbbl) | Bcf | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Thereafter notional quantity (in bcf, bbl or mbbl) | Bcf | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Total notional quantity (in bcf, bbl or mbbl) | Bcf | (1) | (1) | (1) | (1) | (1) | (167) | (167) | (167) | (167) | (167)
Commodity contracts | Crude oil |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional quantity (in bcf, bbl or mbbl) | MMBbls | 28 | 28 | 28 | 28 | 28 |  |  |  |  |
2021 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
2022 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
2023 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
2024 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Thereafter notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Total notional quantity (in bcf, bbl or mbbl) | MMBbls | 28 | 28 | 28 | 28 | 28 | 4 | 4 | 4 | 4 | 4
Commodity contracts | NGL |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional quantity (in bcf, bbl or mbbl) | MMBbls | 2 | 2 | 2 | 2 | 2 |  |  |  |  |
2021 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
2022 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
2023 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
2024 notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Thereafter notional quantity (in bcf, bbl or mbbl) | MMBbls | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Total notional quantity (in bcf, bbl or mbbl) | MMBbls | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0
Commodity contracts | Power |  |  |  |  |  |  |  |  |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |  |  |  |  |  |  |  |  |
2020 notional quantity (MW/H) | MWh | 80 | 80 | 80 | 80 | 80 |  |  |  |  |
2021 notional quantity (MW/H) | MWh | (3) | (3) | (3) | (3) | (3) |  |  |  |  |
2022 notional quantity (MW/H) | MWh | (43) | (43) | (43) | (43) | (43) |  |  |  |  |
2023 notional quantity (MW/H) | MWh | (43) | (43) | (43) | (43) | (43) |  |  |  |  |
2024 notional quantity (MW/H) | MWh | (43) | (43) | (43) | (43) | (43) |  |  |  |  |
Thereafter notional quantity (MW/H) | MWh | (43) | (43) | (43) | (43) | (43) |  |  |  |  |
Total notional quantity (MW/H) | MWh | (16) | (16) | (16) | (16) | (16) | (7) | (7) | (7) | (7) | (7)

X
- Definition Derivative, Nonmonetary Notional Amount Maturing After 5 Years + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountMaturingAfter5Years
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Derivative Nonmonetary Notional Amount Outstanding + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountOutstanding
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the next fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountOutstandingMaturingInNextTwelveMonths
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the fifth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountOutstandingMaturingInYearFive
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the fourth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountOutstandingMaturingInYearFour
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Derivative Nonmonetary Notional Amount Outstanding Maturing In Year Three + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountOutstandingMaturingInYearThree
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the second fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryNotionalAmountOutstandingMaturingInYearTwo
Namespace Prefix: | enb_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Derivative Nonmonetary Rate Notional Amount Outstanding + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstanding
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing after the fifth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstandingMaturingInAfterYearFive
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the next fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstandingMaturingInNextTwelveMonths
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the fifth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstandingMaturingInYearFive
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the fourth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstandingMaturingInYearFour
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the third fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstandingMaturingInYearThree
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the second fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNonmonetaryRateNotionalAmountOutstandingMaturingInYearTwo
Namespace Prefix: | enb_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Derivative Notional Amount Outstanding + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstanding
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount outstanding, specified by the derivative(s), maturing after the fifth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstandingMaturingInAfterYearFive
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount outstanding, specified by the derivative(s), maturing in the next fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstandingMaturingInNextTwelveMonths
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount outstanding, specified by the derivative(s), maturing in the fifth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstandingMaturingInYearFive
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount outstanding, specified by the derivative(s), maturing in the fourth fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstandingMaturingInYearFour
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount outstanding, specified by the derivative(s), maturing in the third fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstandingMaturingInYearThree
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount outstanding, specified by the derivative(s), maturing in the second fiscal year following the balance sheet date. + References No definition available. + Details
Name: | enb_DerivativeNotionalAmountOutstandingMaturingInYearTwo
Namespace Prefix: | enb_
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_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

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

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

X
- Details
Name: | srt_ProductOrServiceAxis=srt_NaturalGasReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=srt_CrudeOilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=srt_NaturalGasLiquidsReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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