Goodwill And Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

GOODWILL AND OTHER INTANGIBLE ASSETS

Segment breakdown of Goodwill and Other Intangible Assets

	Oil Sands	Refining and Marketing
($ millions)	Goodwill	Goodwill		Brand name		Customer lists		Total
At December 31, 2015	2 752	148		166		13		3 079
Amortization	—	—		—		(4	)	(4	)
At December 31, 2016	2 752	148		166		9		3 075
Disposals (note 36)	—	(8	)	(4	)	(1	)	(13	)
Additions	—	—		—		2		2
Amortization	—	—		—		(3	)	(3	)
At December 31, 2017	2 752	140		162		7		3 061