Segment Information - Total assets (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Segment Information
Total assets	[1]	$ 4,463,267	$ 4,729,854
Operating segments | U.S. Drilling
Segment Information
Total assets		1,303,902	1,389,459
Operating segments | International Drilling
Segment Information
Total assets		2,239,643	2,273,766
Operating segments | Drilling Solutions
Segment Information
Total assets		73,519	63,652
Operating segments | Rig Technologies
Segment Information
Total assets		239,468	207,345
Other reconciling items
Segment Information
Total assets		$ 606,735	$ 795,632

[1] The condensed consolidated balance sheets as of June 30, 2023 and December 31, 2022 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.