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COSTS AND EXPENSES BY NATURE - Schedule of depreciation and amortization (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Material income and expense [abstract]      
Depreciation $ (1,151,015) $ (1,125,154) $ (1,114,232)
Amortization (54,358) (54,358) (51,162)
Total (1,205,373) (1,179,512) (1,165,394)
Maintenance cost amount $ 565,384 $ 463,306 $ 351,701