Provisions (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of other provisions [abstract]

Schedule of other provisions

(millions)	Note	Employee related		Written put options(1)		Other(2)		Total
As at January 1, 2020		$	14	$	147	$	10	$	171
Additions		9		—		62		71
Use		(2)		(76)		(41)		(119)
Reversal		(1)		(73)		(10)		(84)
Interest effect		—		2		—		2
Foreign exchange		—		—		—		—
As at December 31, 2020		$	20	$	—	$	21	$	41
Current		$	—	$	—	$	21	$	21
Non-current		20		—		—		20
As at December 31, 2020		$	20	$	—	$	21	$	41
Additions		$	5	$	—	$	3	$	8
Use		(20)		—		(16)		(36)
Reversal		—		—		(1)		(1)
As at December 31, 2021		$	5	$	—	$	7	$	12
Current		$	—	$	—	$	2	$	2
Non-current		5		—		5		10
As at December 31, 2021		$	5	$	—	$	7	$	12