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Asset retirement obligations - Summary of present value of estimated future net cash outflows (Details)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Turkiye | Bottom of range    
Disclosure of Asset Retirement Obligations [line items]    
Inflation rate 2.30% 1.30%
Discount rate 4.00% 1.30%
Turkiye | Top of range    
Disclosure of Asset Retirement Obligations [line items]    
Inflation rate 3.10% 1.90%
Discount rate 4.10% 1.90%
Canada    
Disclosure of Asset Retirement Obligations [line items]    
Inflation rate 260.00% 150.00%
Discount rate 390.00% 150.00%
Greece | Bottom of range    
Disclosure of Asset Retirement Obligations [line items]    
Inflation rate 2.40% 0.70%
Discount rate 4.10% 0.70%
Greece | Top of range    
Disclosure of Asset Retirement Obligations [line items]    
Inflation rate 2.80% 1.90%
Discount rate 4.40% 1.90%
Romania    
Disclosure of Asset Retirement Obligations [line items]    
Inflation rate 250.00% 190.00%
Discount rate 410.00% 190.00%