Segment Information - Operating revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Information
Operating revenues	$ 733,974	$ 694,136	$ 2,280,180	$ 1,893,618
Operating segments | U.S. Drilling
Segment Information
Operating revenues	276,385	297,178	941,867	767,769
Operating segments | International Drilling
Segment Information
Operating revenues	344,780	306,355	1,002,478	881,705
Operating segments | Drilling Solutions
Segment Information
Operating revenues	72,831	61,981	224,729	172,042
Operating segments | Rig Technologies
Segment Information
Operating revenues	61,437	50,496	183,481	132,326
Other reconciling items
Segment Information
Operating revenues	$ (21,459)	$ (21,874)	$ (72,375)	$ (60,224)