Segment Information - Adjusted operating income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Information
Total segment adjusted operating income (loss)	$ 100,936	$ 119,218	$ 205,043	$ 237,876
Operating segments
Segment Information
Total segment adjusted operating income (loss)	100,936	119,218	205,043	237,876
Operating segments | U.S. Drilling
Segment Information
Total segment adjusted operating income (loss)	45,085	75,408	95,614	161,277
Operating segments | International Drilling
Segment Information
Total segment adjusted operating income (loss)	23,672	10,407	46,148	12,364
Operating segments | Drilling Solutions
Segment Information
Total segment adjusted operating income (loss)	27,319	28,351	54,212	55,489
Operating segments | Rig Technologies
Segment Information
Total segment adjusted operating income (loss)	$ 4,860	$ 5,052	$ 9,069	$ 8,746