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Asset retirement obligations - Summary of asset retirement obligations (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure of Asset Retirement Obligations [line items] |  |
Beginning Balance | $ 135,455 | $ 111,378
Acquired during the year |  | 3,300
Accretion during the year | 2,242 | 1,412
Revisions to estimate | (14,311) | 21,678
Settlements | (3,202) | (2,313)
Reclassified to liabilities associated with assets held for sale | (10,311) |
Ending Balance | 109,873 | 135,455
Less: Current portion | (3,980) | (4,088)
Long term portion | 105,893 | 131,367
Estimated undiscounted amount | 185,668 | 177,586
Turkiye |  |
Disclosure of Asset Retirement Obligations [line items] |  |
Beginning Balance | 54,594 | 44,816
Acquired during the year |  | 0
Accretion during the year | 965 | 608
Revisions to estimate | 161 | 10,209
Settlements | (1,199) | (1,039)
Reclassified to liabilities associated with assets held for sale | 0 |
Ending Balance | 54,521 | 54,594
Less: Current portion | 0 | 0
Long term portion | 54,521 | 54,594
Estimated undiscounted amount | 92,673 | 71,404
Canada |  |
Disclosure of Asset Retirement Obligations [line items] |  |
Beginning Balance | 15,838 | 12,961
Acquired during the year |  | 3,300
Accretion during the year | 144 | 131
Revisions to estimate | (1,767) | (554)
Settlements | 0 | 0
Reclassified to liabilities associated with assets held for sale | 0 |
Ending Balance | 14,215 | 15,838
Less: Current portion | 0 | 0
Long term portion | 14,215 | 15,838
Estimated undiscounted amount | 20,022 | 18,416
Greece |  |
Disclosure of Asset Retirement Obligations [line items] |  |
Beginning Balance | 51,535 | 51,940
Acquired during the year |  | 0
Accretion during the year | 871 | 649
Revisions to estimate | (9,266) | 220
Settlements | (2,003) | (1,274)
Reclassified to liabilities associated with assets held for sale | 0 |
Ending Balance | 41,137 | 51,535
Less: Current portion | (3,980) | (4,088)
Long term portion | 37,157 | 47,447
Estimated undiscounted amount | 72,973 | 68,704
Romania |  |
Disclosure of Asset Retirement Obligations [line items] |  |
Beginning Balance | 13,488 | 1,661
Acquired during the year |  | 0
Accretion during the year | 262 | 24
Revisions to estimate | (3,439) | 11,803
Settlements | 0 | 0
Reclassified to liabilities associated with assets held for sale | (10,311) |
Ending Balance | 0 | 13,488
Less: Current portion | 0 | 0
Long term portion | 0 | 13,488
Estimated undiscounted amount | $ 0 | $ 19,062

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- Definition Asset Retirement Obligations + References No definition available. + Details
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- Definition Asset retirement obligations, accretion expense during the year. + References No definition available. + Details
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- Definition Revisions to estimate of asset retirement obligations. + References No definition available. + Details
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