Segment Information - Total assets (Details) - USD ($) $ in Thousands		Sep. 30, 2025	Dec. 31, 2024
Segment Information
Total assets	[1]	$ 4,833,504	$ 4,504,301
Operating Segments
Segment Information
Total assets		3,894,436	3,692,530
Operating Segments | U.S. Drilling
Segment Information
Total assets		1,012,063	1,049,650
Operating Segments | International Drilling
Segment Information
Total assets		2,494,424	2,348,590
Operating Segments | Drilling Solutions
Segment Information
Total assets		221,598	79,065
Operating Segments | Rig Technologies
Segment Information
Total assets		166,351	215,225
Other items
Segment Information
Total assets		$ 939,068	$ 811,771

[1] The condensed consolidated balance sheets as of September 30, 2025 and December 31, 2024 include assets and liabilities of variable interest entities. See Note 4—Joint Ventures and Note 14—Special Purpose Acquisition Company for additional information.