Segment Information - Operations by geographic area (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) customer	Dec. 31, 2023 USD ($) customer	Dec. 31, 2022 USD ($) customer
Segment Information
Operating revenues	$ 2,930,126	$ 3,005,981	$ 2,653,766
Property, plant and equipment, net	$ 2,830,957	$ 2,898,728	$ 3,026,100
Customer concentration | Major customers
Segment Information
Number of customers representing more than 10% of revenues | customer	1	1	1
Revenue | Customer concentration | Major customers
Segment Information
Concentration risk (as a percent)	31.00%	26.00%	26.00%
UNITED STATES
Segment Information
Operating revenues	$ 1,283,785	$ 1,477,774	$ 1,323,531
Property, plant and equipment, net	1,165,677	1,304,686	1,437,333
Outside the U.S.
Segment Information
Operating revenues	1,646,341	1,528,207	1,330,235
Property, plant and equipment, net	1,665,280	1,594,042	1,588,767
Saudi Arabia
Segment Information
Operating revenues	$ 927,700	$ 821,100	$ 712,800