Segment Information - Total assets (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Segment Information
Total assets	[1]	$ 4,729,854	$ 5,525,364
Operating segments | U.S. Drilling
Segment Information
Total assets		1,389,459	1,606,683
Operating segments | Canada Drilling
Segment Information
Total assets		372	1,392
Operating segments | International Drilling
Segment Information
Total assets		2,273,766	2,380,703
Operating segments | Drilling Solutions
Segment Information
Total assets		63,652	65,899
Operating segments | Rig Technologies
Segment Information
Total assets		207,345	190,489
Other reconciling items
Segment Information
Total assets		$ 795,260	$ 1,280,198

[1] The consolidated balance sheets include assets and liabilities of consolidated joint ventures. See Note 13—Joint Ventures for additional information.