Segment Information - Total assets (Details) - USD ($) $ in Thousands		Dec. 31, 2024	Dec. 31, 2023
Segment Information
Total assets	[1]	$ 4,504,301	$ 5,277,965
Operating Segments
Segment Information
Total assets		3,692,530	3,784,712
Operating Segments | U.S. Drilling
Segment Information
Total assets		1,049,650	1,239,765
Operating Segments | International Drilling
Segment Information
Total assets		2,348,590	2,227,308
Operating Segments | Drilling Solutions
Segment Information
Total assets		79,065	78,472
Operating Segments | Rig Technologies
Segment Information
Total assets		215,225	239,167
Other items
Segment Information
Total assets		$ 811,771	$ 1,493,253

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