Asset retirement obligations (Tables)

12 Months Ended

Dec. 31, 2022

Disclosure of Asset Retirement Obligations [abstract]


	Turkiye		Canada		Greece		Romania		Total

At January 1, 2022	$	54,594	$	15,838	$	51,535	$	13,488	$	135,455
Accretion during the year (1)	965		144		871		262		2,242
Revisions to estimate	161		(1,767)		(9,266)		(3,439)		(14,311)
Settlements	(1,199)		—		(2,003)		—		(3,202)
Reclassified to liabilities associated with assets held for sale	—		—		—		(10,311)		(10,311)
At December 31, 2022	$	54,521	$	14,215	$	41,137	$	—	$	109,873
Less: Current portion	—		—		(3,980)		—		(3,980)
Long term portion	$	54,521	$	14,215	$	37,157	$	—	$	105,893

Estimated undiscounted amount	$	92,673	$	20,022	$	72,973	$	—	$	185,668


	Turkiye		Canada		Greece		Romania		Total

At January 1, 2021	$	44,816	$	12,961	$	51,940	$	1,661	$	111,378
Acquired during the year	—		3,300		—		—		3,300
Accretion during the year (1)	608		131		649		24		1,412
Revisions to estimate	10,209		(554)		220		11,803		21,678
Settlements	(1,039)		—		(1,274)		—		(2,313)

At December 31, 2021	$	54,594	$	15,838	$	51,535	$	13,488	$	135,455
Less: Current portion	—		—		(4,088)		—		(4,088)
Long term portion	$	54,594	$	15,838	$	47,447	$	13,488	$	131,367

Estimated undiscounted amount	$	71,404	$	18,416	$	68,704	$	19,062	$	177,586

(1) Accretion expense for the Romanian reporting segment has been reclassified to loss from discontinued operations for the years ended December 31, 2022 and 2021 (Note 6 (a)).

Summary of present value of estimated future net cash outflows

The provision is calculated as the present value of estimated future net cash outflows based on the following key assumptions:


	Turkiye	Canada	Greece	Romania
	%	%	%	%
At December 31, 2022
Inflation rate	2.3 to 3.1	2.6	2.4 to 2.8	2.5
Discount rate	4.0 to 4.1	3.9	4.1 to 4.4	4.1

At December 31, 2021
Inflation rate	1.3 to 1.9	1.5	0.7 to 1.9	1.9
Discount rate	1.3 to 1.9	1.5	0.7 to 1.9	1.9