Goodwill and intangible assets (Tables)

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

	Goodwill		Intangible assets
(in millions of Canadian dollars)	Net carrying amount		Cost		Accumulated amortization		Net carrying amount		Total goodwill and intangible assets
Balance as at December 31, 2020	$	329	$	55	$	(18)	$	37	$	366
Additions (Note 9)	—		9		—		9		9
Amortization	—		—		(3)		(3)		(3)
Foreign exchange impact	(1)		—		—		—		(1)
Balance as at December 31, 2021	328		64		(21)		43		371
Amortization	—		—		(3)		(3)		(3)
Foreign exchange impact	16		2		—		2		18
Balance as at December 31, 2022	$	344	$	66	$	(24)	$	42	$	386