Other employee benefits (Tables)

12 Months Ended

Dec. 31, 2020

Other Employee Benefits [Abstract]

Disclosure of detailed information about other employee benefit plans [Table Text Block]

		Year ended
		Dec. 31, 2020			Dec. 31, 2019
Opening defined benefit obligation	$	116,696		$	93,528
Current service cost1		4,140			3,060
Past service cost		—			—
Interest cost		3,478			3,600
Effects of movements in exchange rates		2,423			4,864
Remeasurement actuarial (gains)/losses:
Arising from changes in demographic assumptions		(4,460	)		—
Arising from changes in financial assumptions		10,043			14,094
Arising from experience adjustments		(489	)		87
Benefits paid		(2,215	)		(2,537	)
Closing defined benefit obligation	$	129,616		$	116,696

¹ Includes remeasurement of other long term employee benefits

Disclosure of detailed information about other employee benefit plans, balance by member group [Table Text Block]

		Dec. 31, 2020		Dec. 31, 2019
Active members	$	68,983	$	60,801
Inactive members		60,633		55,895
Closing defined benefit obligation	$	129,616	$	116,696

Disclosure of detailed information about changes in fair value of assets of other employee benefits plan [Table Text Block]

		Dec. 31, 2020			Dec. 31, 2019
Employer contributions	$	2,215		$	2,537
Benefits paid		(2,215	)		(2,537	)
Closing fair value of assets	$	—		$	—

Disclosure of detailed information about net benefit liability for other employee benefits [Table Text Block]

		Dec. 31, 2020		Dec. 31, 2019
Unfunded benefit obligation	$	129,616	$	116,696
Vacation accrual and other - non-current		3,046		2,888
Net liability	$	132,662	$	119,584

Disclosure of detailed information about other employee benefits plan [Table Text Block]

		Dec. 31, 2020		Dec. 31, 2019
Other employee benefits liability - current (note 14)	$	3,154	$	2,806
Other employee benefits liability - non-current		129,508		116,778
Net liability	$	132,662	$	119,584

Disclosure of detailed information about employee future benefit expense [Table Text Block]

		Dec. 31, 2020		Dec. 31, 2019
Current service cost 1	$	4,140	$	3,060
Net interest cost		3,478		3,600
Components recognized in consolidated income statements	$	7,618	$	6,660

¹ Includes remeasurement of other long term employee benefit

Disclosure of detailed information about remeasurement of other long term employee benefits [Table Text Block]

		Dec. 31, 2020			Dec. 31, 2019
Remeasurement on the net defined benefit liability:
Actuarial gains arising from changes in demographic assumptions	$	(4,460	)	$	—
Actuarial losses arising from changes in financial assumptions		10,043			14,094
Actuarial (gains)/losses arising from changes experience adjustments		(489	)		87
Components recognized in statements of comprehensive income	$	5,094		$	14,181

 

Total other employee future benefit cost $ 12,712 $ 20,841

Disclosure of detailed information about other employee benefit plan, assumptions used [Table Text Block]

	Dec. 31, 2020	Dec. 31, 2019
Defined benefit cost:
Discount rate	3.17 %	3.88 %
Initial weighted average health care trend rate	5.68 %	5.74 %
Ultimate weighted average health care trend rate	4.00 %	4.00 %
Average longevity at retirement age for current pensioners (years)1 :
Males	21.2	21.1
Females	23.9	23.9

 

	Dec. 31, 2020		Dec. 31, 2019
Defined benefit obligation:
Discount rate	2.76	%	3.17	%
Initial weighted average health care trend rate	5.66	%	5.68	%
Ultimate weighted average health care trend rate	4.00	%	4.00	%
Average longevity at retirement age for current pensioners (years)1 :
Males	20.3		21.2
Females	23.7		23.9
Average longevity at retirement age for current employees (future pensioners) (years)1 :
Males	22.2		23.1
Females	25.4		25.6

¹ CPM2014 Priv with CPM-B projection scale