Segment Information - Operating revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Information
Operating revenues	$ 733,704	$ 779,139
Operating segments | U.S. Drilling
Segment Information
Operating revenues	271,989	350,652
Operating segments | International Drilling
Segment Information
Operating revenues	349,359	320,048
Operating segments | Drilling Solutions
Segment Information
Operating revenues	75,574	75,043
Operating segments | Rig Technologies
Segment Information
Operating revenues	50,156	58,479
Other reconciling items
Segment Information
Operating revenues	$ (13,374)	$ (25,083)