SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PROPERTY, PLANT AND EQUIPMENT (Details)	12 Months Ended
Dec. 31, 2016 item
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Number of primary methods of depreciation which are utilized	2

Represents the number of primary methods of depreciation which are utilized.

No definition available.

Name:	enb_NumberOfPrimaryMethodsOfDepreciationWhichAreUtilized
Namespace Prefix:	enb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration