Segment Information - Total assets (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Dec. 31, 2024
Segment Information
Total assets	[1]	$ 4,789,657	$ 4,504,301
Operating Segments
Segment Information
Total assets		3,769,228	3,692,530
Operating Segments | U.S. Drilling
Segment Information
Total assets		967,478	1,049,650
Operating Segments | International Drilling
Segment Information
Total assets		2,434,728	2,348,590
Operating Segments | Drilling Solutions
Segment Information
Total assets		213,184	79,065
Operating Segments | Rig Technologies
Segment Information
Total assets		153,838	215,225
Other items
Segment Information
Total assets		$ 1,020,429	$ 811,771

[1] The consolidated balance sheets include assets and liabilities of consolidated joint ventures. See Note 12—Joint Ventures for additional information.