Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

			Intangible assets
(in millions of Canadian dollars)	Goodwill		Cost		Accumulated amortization			Net carrying amount			Total goodwill and intangible assets
Balance at December 31, 2013	$	150	$	22	$	(10	)	$	12		$	162
Amortization	—		—		(1		)	(1		)	(1		)
Foreign exchange impact	14		—		1			1			15
Balance at December 31, 2014	$	164	$	22	$	(10	)	$	12		$	176
Amortization	—		—		(1		)	(1		)	(1		)
Foreign exchange impact	31		—		2			2			33
Additions	3		—		—			—			3
Balance at December 31, 2015	$	198	$	22	$	(9	)	$	13		$	211