DEBT - Schedule of Committed Credit Facilities (Details) - Dec. 31, 2018 $ in Millions, $ in Millions	USD ($)	CAD ($)
DEBT
Commitments that expire in 2020		$ 9,262
Commitments that expire in 2021		2,389
Committed credit facilities
DEBT
Total Facilities		18,308
Draws		9,417
Available		8,891
Enbridge (U.S.) Inc. \| Committed credit facilities
DEBT
Total Facilities		1,932
Draws		1,065
Available		867
Enbridge Energy Partners, L.P. \| Committed credit facilities
DEBT
Total Facilities		2,493
Draws		1,044
Available		1,449
Commitments that expire in 2020	$ 185	253
Enbridge Gas Distribution Inc. \| Committed credit facilities
DEBT
Total Facilities		1,018
Draws		760
Available		258
Enbridge Pipelines Inc. \| Committed credit facilities
DEBT
Total Facilities		3,000
Draws		2,200
Available		800
Spectra Energy Partners, LP \| Committed credit facilities
DEBT
Total Facilities		3,414
Draws		2,065
Available		1,349
Commitments that expire in 2021	$ 336	421
Union Gas Limited \| Committed credit facilities
DEBT
Total Facilities		700
Draws		275
Available		425
Enbridge Inc. \| Committed credit facilities
DEBT
Total Facilities		5,751
Draws		2,008
Available		$ 3,743

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Section S99
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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