Segment Information - Operations by geographic area (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2025 USD ($) customer	Dec. 31, 2024 USD ($) customer	Dec. 31, 2023 USD ($) customer
Segment Information
Operating revenues	[1]	$ 3,184,693	$ 2,930,126	$ 3,005,981
Property, plant and equipment, net		$ 2,920,019	$ 2,830,957	$ 2,898,728
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)		30.00%	31.00%	26.00%
U.S.
Segment Information
Operating revenues		$ 1,309,598	$ 1,283,785	$ 1,477,774
Property, plant and equipment, net		1,041,793	1,165,677	1,304,686
Outside the U.S.
Segment Information
Operating revenues		1,875,095	1,646,341	1,528,207
Property, plant and equipment, net		1,878,226	1,665,280	1,594,042
Saudi Arabia
Segment Information
Operating revenues		$ 1,000,000	$ 927,700	$ 821,100

[1] Includes related party revenues of $1.1 billion, $0.9 billion, and $0.8 billion for the years ended December 31, 2025, 2024 and 2023, respectively.