Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of detailed information about property, plant and equipment [abstract]

Schedule of property, plant and equipment

	Owned Assets										Right-of- use lease assets
(millions)	Computer hardware and network assets		Buildings and leasehold improvements		Furniture and equipment		Assets under construction		Total		Buildings		Total
At cost
As at January 1, 2020	$	32	$	78	$	155	$	11	$	276	$	203	$	479
Additions	1		5		20		37		63		27		90
Additions from acquisition	6		9		24		2		41		35		76
Dispositions retirements and other	—		(8)		(14)		(3)		(25)		(10)		(35)
Transfers	6		9		17		(32)		—		—		—
Foreign exchange	1		2		5		—		8		9		17
As at December 31, 2020	$	46	$	95	$	207	$	15	$	363	$	264	$	627
Additions	4		23		43		23		$	93	62		155
Dispositions retirements and other	(6)		(3)		(25)		4		(30)		(6)		(36)
Transfers	3		4		7		(14)		—		—		—
Foreign exchange	1		—		(1)		(2)		(2)		(3)		(5)
As at December 31, 2021	$	48	$	119	$	231	$	26	$	424	$	317	$	741
Accumulated depreciation
As at January 1, 2020	$	16	$	28	$	100	$	—	144		$	35	179
Depreciation	7		11		33		—		51		48		99
Dispositions retirements and other	—		(8)		(9)		—		(17)		—		(17)
Foreign exchange	—		1		2		—		3		1		4
As at December 31, 2020	$	23	$	32	$	126	$	—	$	181	$	84	$	265
Depreciation	8		15		38		—		61		54		115
Dispositions retirements and other	(5)		(3)		(25)		—		(33)		(6)		(39)
Foreign exchange	—		1		(1)		—		—		(5)		(5)
As at December 31, 2021	$	26	$	45	$	138	$	—	$	209	$	127	$	336
Net Book Value
As at December 31, 2020	$	23	$	63	$	81	$	15	$	182	$	180	$	362
As at December 31, 2021	$	22	$	74	$	93	$	26	$	215	$	190	$	405