Segment Information - Total assets (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022
Segment Information
Total assets	[1]	$ 4,726,850	$ 4,729,854
Operating segments | U.S. Drilling
Segment Information
Total assets		1,278,623	1,389,459
Operating segments | International Drilling
Segment Information
Total assets		2,239,422	2,273,766
Operating segments | Drilling Solutions
Segment Information
Total assets		81,464	63,652
Operating segments | Rig Technologies
Segment Information
Total assets		239,384	207,345
Other reconciling items
Segment Information
Total assets		$ 887,957	$ 795,632

[1] The condensed consolidated balance sheets as of September 30, 2023 and December 31, 2022 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures and Note 13—Special Purpose Acquisition Companies for additional information.