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Segment Information - Operations by geographic area (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) customer | Dec. 31, 2022 USD ($) customer | Dec. 31, 2021 USD ($) customer
Segment Information |  |  |
Operating revenues | $ 3,005,981 | $ 2,653,766 | $ 2,017,548
Property, plant and equipment, net | $ 2,898,728 | $ 3,026,100 | $ 3,348,498
Customer Concentration Risk | Major customers |  |  |
Segment Information |  |  |
Number of customers representing more than 10% of revenues | customer | 1 | 1 | 1
Sales Revenue | Customer Concentration Risk | Major customers |  |  |
Segment Information |  |  |
Concentration risk (as a percent) | 26.00% | 26.00% | 31.00%
U.S. |  |  |
Segment Information |  |  |
Operating revenues | $ 1,477,774 | $ 1,323,531 | $ 804,807
Property, plant and equipment, net | 1,304,686 | 1,437,333 | 1,648,622
Outside the U.S |  |  |
Segment Information |  |  |
Operating revenues | 1,528,207 | 1,330,235 | 1,212,741
Property, plant and equipment, net | 1,594,042 | 1,588,767 | 1,699,876
Saudi Arabia |  |  |
Segment Information |  |  |
Operating revenues | $ 821,100 | $ 712,800 | $ 645,000

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