Asset retirement obligations (Tables)

12 Months Ended

Dec. 31, 2024

Disclosure of Asset Retirement Obligations [abstract]


	Turkiye		Canada		Greece		Romania		Total

At January 1, 2024	$	76,357	$	15,308	$	37,444	$	—	$	129,109
Accretion during the year (1)	2,963		355		1,551		447		5,316
Revisions to estimate	6,589		(3,856)		(27)		(1,202)		1,504
Settlements	(635)		—		(3,053)		—		(3,688)
Reclassified to liabilities associated with assets held for sale	—		—		—		755		755
At December 31, 2024	$	85,274	$	11,807	$	35,915	$	—	$	132,996
Less: Current liability portion	—		—		(5,071)		—		(5,071)
Non-current liability portion	$	85,274	$	11,807	$	30,844	$	—	$	127,925

Estimated undiscounted amount	$	157,040	$	27,740	$	67,837	$	—	$	252,617


	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

(1) Accretion expense for the Romanian reporting segment has been reclassified to loss from discontinued operations for the years ended December 31, 2024 and 2023 (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, 2024
Inflation rate	2.6 to 2.9	2.5	2.5 to 4.2	2.4
Discount rate	4.6	4.9	4.4 to 4.9	4.9

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