Asset retirement obligations (Tables)

12 Months Ended

Dec. 31, 2023

Disclosure of Asset Retirement Obligations [abstract]


	Turkiye		Canada		Greece		Romania		Total

At January 1, 2023	$	54,521	$	14,215	$	41,137	$	—	$	109,873
Accretion during the year (1)	2,224		336		1,731		427		4,718
Revisions to estimate	20,095		757		(2,316)		(99)		18,437
Settlements	(483)		—		(3,108)		—		(3,591)
Reclassified to liabilities associated with assets held for sale	—		—		—		(328)		(328)
At December 31, 2023	$	76,357	$	15,308	$	37,444	$	—	$	129,109
Less: Current liability portion	—		—		(4,019)		—		(4,019)
Non-current liability portion	$	76,357	$	15,308	$	33,425	$	—	$	125,090

Estimated undiscounted amount	$	127,181	$	20,757	$	64,771	$	—	$	212,709


	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 liability portion	—		—		(3,980)		—		(3,980)
Non-current liability portion	$	54,521	$	14,215	$	37,157	$	—	$	105,893

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

(1) Accretion expense for the Romanian reporting segment has been reclassified to loss from discontinued operations for the years ended December 31, 2023 and 2022 (Note 6).

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, 2023
Inflation rate	2.5 to 3.2	3.2	2.3 to 2.5	2.5
Discount rate	3.9	3.9	4.0 to 4.2	4.2

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