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RECIPROCAL SHAREHOLDING (Details) (Noverco, CAD) In Millions, unless otherwise specified | 0 Months Ended |  |
--- | --- | --- | ---
Jun. 04, 2013 | May 28, 2013 | Dec. 31, 2012
Noverco |  |  |
RECIPROCAL SHAREHOLDING |  |  |
Reciprocal ownership |  | 3.90% | 6.00%
Reciprocal common shares sold through secondary offering |  | 15 |
Net after-tax proceeds received as dividends | 248 |  |

X
- Definition Represents the amount of cash inflow received as dividends. + References No definition available. + Details
Name: | enb_EquityMethodInvestmentNetSalesProceedsReceivedAsDividends
Namespace Prefix: | enb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the number of reciprocal common shares sold through secondary offerings. + References No definition available. + Details
Name: | enb_EquityMethodInvestmentReciprocalSharesSoldThroughSecondaryHolding
Namespace Prefix: | enb_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the reciprocal ownership percentage held of the reporting company. + References No definition available. + Details
Name: | enb_ReciprocalOwnershipOfReportingCompany
Namespace Prefix: | enb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration