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Financial instruments - Net Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Financial instruments        
Cash and cash equivalents $ 2,655,236 $ 1,515,051 $ 509,102 $ 588,530
Other current financial assets 961,355 919,049    
Other non-current financial hedge assets 22,606 245    
Other current financial liabilities (522,999) (51,305)    
Lease liabilities, current (12,149) (7,704)    
Other non-current financial liabilities (2,394,218) (2,587,732)    
Non-current lease liabilities (49,585) (46,519)    
Total $ 660,246 $ (258,915) $ (1,105,095)