Segment Information - Total assets (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Segment Information
Total assets	[1]	$ 4,699,976	$ 4,729,854
Operating segments | U.S. Drilling
Segment Information
Total assets		1,345,122	1,389,459
Operating segments | International Drilling
Segment Information
Total assets		2,229,068	2,273,766
Operating segments | Drilling Solutions
Segment Information
Total assets		72,002	63,652
Operating segments | Rig Technologies
Segment Information
Total assets		225,006	207,345
Other reconciling items
Segment Information
Total assets		$ 828,778	$ 795,632

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