Segment Information - Total assets (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Segment Information
Total assets	[1]	$ 4,768,555	$ 5,525,364
Operating segments | U.S. Drilling
Segment Information
Total assets		1,444,686	1,606,683
Operating segments | Canada Drilling
Segment Information
Total assets		368	1,392
Operating segments | International Drilling
Segment Information
Total assets		2,297,339	2,380,703
Operating segments | Drilling Solutions
Segment Information
Total assets		59,261	65,899
Operating segments | Rig Technologies
Segment Information
Total assets		189,878	190,489
Other reconciling items
Segment Information
Total assets		$ 777,023	$ 1,280,198

[1] The condensed consolidated balance sheet as of September 30, 2022 and December 31, 2021 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.