VARIABLE INTEREST ENTITIES (Detail) (CAD) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income statement and cash flow statement
Revenues	37,641us-gaap_Revenues	32,918us-gaap_Revenues	24,660us-gaap_Revenues
Operating and administrative expense	(3,281)us-gaap_GeneralAndAdministrativeExpense	(3,014)us-gaap_GeneralAndAdministrativeExpense	(2,739)us-gaap_GeneralAndAdministrativeExpense
Depreciation and amortization	(1,577)	(1,370)	(1,236)
Income from equity investments	368	330	195
Income taxes recovery/(expense)	(611)us-gaap_IncomeTaxExpenseBenefit	(123)us-gaap_IncomeTaxExpenseBenefit	(171)us-gaap_IncomeTaxExpenseBenefit
Earnings/(loss)	1,608us-gaap_ProfitLoss	494us-gaap_ProfitLoss	936us-gaap_ProfitLoss
Loss attributable to noncontrolling interests	(203)	135	(229)
Earnings attributable to Enbridge Inc.	1,405us-gaap_NetIncomeLoss	629us-gaap_NetIncomeLoss	707us-gaap_NetIncomeLoss
Cash flows
Cash provided by operating activities	2,547	3,341	2,874
Cash used in investing activities	(11,891)	(9,431)	(6,204)
Cash provided by/(used in) financing activities	9,770	5,070	4,395
Increase/(decrease) in cash and cash equivalents	485	(1,000)	1,053
Balance sheet
Current assets	8,201us-gaap_AssetsCurrent	6,950us-gaap_AssetsCurrent
Property, plant and equipment, net	53,830us-gaap_PropertyPlantAndEquipmentNet	42,279us-gaap_PropertyPlantAndEquipmentNet
Long term investments	5,408us-gaap_LongTermInvestments	4,212us-gaap_LongTermInvestments
Deferred amounts and other assets	3,208us-gaap_DeferredCostsAndOtherAssets	2,662us-gaap_DeferredCostsAndOtherAssets
Current liabilities	(9,501)us-gaap_LiabilitiesCurrent	(10,728)us-gaap_LiabilitiesCurrent
Other long-term liabilities	(4,041)	(2,938)
Deferred income taxes	(4,842)	(2,925)
The fund
VARIABLE INTEREST ENTITY
Economic interest (as a percent)	66.40%	67.30%	67.70%
Equity Investment	872	554
Income statement and cash flow statement
Revenues	416	403	288
Operating and administrative expense	(135)	(126)	(83)
Depreciation and amortization	(136)	(130)	(87)
Income from equity investments	72	57	54
Interest expense	(59)	(91)	(68)
Income taxes recovery/(expense)	(43)	(27)	(35)
Earnings/(loss)	115	86	69
Loss attributable to noncontrolling interests	11	24	12
Earnings attributable to Enbridge Inc.	126	110	81
Cash flows
Cash provided by operating activities	277	260	200
Cash used in investing activities	(1,806)	(98)	(160)
Cash provided by/(used in) financing activities	1,531	(323)	1,495
Increase/(decrease) in cash and cash equivalents	2	(161)	1,535
Balance sheet
Current assets	114	84
Property, plant and equipment, net	2,226	2,317
Long term investments	441	227
Deferred amounts and other assets	1,304	130
Current liabilities	(149)	(388)
Long-term debt	(2,544)	(1,364)
Other long-term liabilities	(79)	(26)
Deferred income taxes	(441)	(426)
Net assets before noncontrolling interest	872	554
Amount of an investments in Class A units of Enbridge subsidiaries by the Fund	945
Magicat Holdco LLC
VARIABLE INTEREST ENTITY
Economic interest (as a percent)	80.00%
Equity Investment	394
Consolidated assets	759
Consolidated liabilities	14
Balance sheet
Net assets before noncontrolling interest	394

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- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685

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- Definition

The net carrying amount of the consolidated Variable Interest Entity's assets and liabilities included in the reporting entity's statement of financial position.

+ References

No definition available.

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- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

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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

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