Property and equipment, net - Schedule of Property and equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Less accumulated depreciation	$ (1,090,647)	$ (1,004,825)
Property and equipment, net	1,622,896	1,649,779
Vessels And Related Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,535,748	2,497,449
Finance Lease Right-of-Use Assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,007	40,007
Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	25,359	23,807
Assets in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 112,429	$ 93,341