GOODWILL (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

	Liquids Pipelines		Gas Transmission and Midstream		Gas Distribution and Storage		Renewable Power Generation	Energy Services	Eliminations and Other		Consolidated
(millions of Canadian dollars)
Gross Cost
Balance at January 1, 2018	7,786		21,539		5,679		—	2	13		35,019
Disposition	—		(628	)	—		—	—	—		(628	)
Allocation to assets held for sale	—		(55	)	(133	)	—	—	—		(188	)
Foreign exchange and other	538		1,482		(183	)	—	—	—		1,837
Balance at December 31, 2018	8,324		22,338		5,363		—	2	13		36,040
Foreign exchange and other	(373	)	(933	)	—		—	—	—		(1,306	)
Balance at December 31, 2019	7,951		21,405		5,363		—	2	13		34,734
Accumulated Impairment
Balance at January 1, 2018	—		(542	)	(7	)	—	—	(13	)	(562	)
Impairment	—		(1,019	)	—		—	—	—		(1,019	)
Balance at December 31, 2018	—		(1,561	)	(7	)	—	—	(13	)	(1,581	)
Balance at December 31, 2019	—		(1,561	)	(7	)	—	—	(13	)	(1,581	)
Carrying Value
Balance at December 31, 2018	8,324		20,777		5,356		—	2	—		34,459
Balance at December 31, 2019	7,951		19,844		5,356		—	2	—		33,153