Segment Information - Total assets (Details) - USD ($) $ in Thousands		Mar. 31, 2026	Dec. 31, 2025
Segment Information
Total assets	[1]	$ 4,385,636	$ 4,789,657
Operating Segments
Segment Information
Total assets		3,723,550	3,769,228
Operating Segments | U.S. Drilling
Segment Information
Total assets		943,098	967,478
Operating Segments | International Drilling
Segment Information
Total assets		2,441,126	2,434,728
Operating Segments | Drilling Solutions
Segment Information
Total assets		196,783	213,184
Operating Segments | Rig Technologies
Segment Information
Total assets		142,543	153,838
Other items
Segment Information
Total assets		$ 662,086	$ 1,020,429

[1] The condensed consolidated balance sheets as of March 31, 2026 and December 31, 2025 include assets and liabilities of variable interest entities. See Note 4—Joint Ventures for additional information.