Leases - Components of lease expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases
Operating lease cost	$ 70,262	$ 166,599	$ 217,635
Short-term lease cost	169,159	74,514	33,456
Amortization of right-of-use assets	34,448	38,322	49,496
Interest on lease liabilities	4,845	8,566	13,122
Total finance lease cost	39,293	46,888	62,618
Total lease costs	$ 278,714	$ 288,001	$ 313,709