DEBT - Long Term Debt Issuance (Details) - Enbridge Pipelines Inc.	Feb. 28, 2019 CAD ($)
3.52% Medium Term Notes Due February 2029
DEBT
Face amount of notes issued	$ 600,000,000
Interest rate (as a percent)	3.52%
4.33% Medium Term Notes Due February 2049
DEBT
Face amount of notes issued	$ 600,000,000
Interest rate (as a percent)	4.33%

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant