Represents the percentage of economic interest held by the reporting entity.

No definition available.

Name:	enb_EconomicInterestPercentage
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Data Type:	num:percentItemType
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685

+ Details

Name:	us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix:	us-gaap_
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GENERAL BUSINESS DESCRIPTION (Details)	12 Months Ended					12 Months Ended
GENERAL BUSINESS DESCRIPTION (Details)	Dec. 31, 2013 item	Dec. 31, 2013 EEP	Dec. 31, 2012 EEP	Dec. 31, 2011 EEP	Dec. 31, 2013 Sponsored Investments Alliance Pipeline Canada joint venture	Dec. 31, 2013 Sponsored Investments The fund	Dec. 31, 2012 Sponsored Investments The fund	Dec. 31, 2013 Sponsored Investments United States segment of the Alberta Clipper Project	Dec. 31, 2012 Sponsored Investments United States segment of the Alberta Clipper Project	Dec. 31, 2013 Sponsored Investments EEP	Dec. 31, 2012 Sponsored Investments EEP
General business description
Number of operating segments	5
GENERAL BUSINESS DESCRIPTION
Ownership interest (as a percent)		20.60%	21.80%	23.00%						20.60%	21.80%
Percentage of investment								66.70%	66.70%
Economic interest (as a percent)						67.30%	67.70%
Interest (as a percent)					50.00%