Segment Information - Operating revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Information
Operating revenues	$ 734,798	$ 767,067	$ 1,468,502	$ 1,546,206
Operating segments | U.S. Drilling
Segment Information
Operating revenues	259,723	314,830	531,712	665,482
Operating segments | International Drilling
Segment Information
Operating revenues	356,733	337,650	706,092	657,698
Operating segments | Drilling Solutions
Segment Information
Operating revenues	82,961	76,855	158,535	151,898
Operating segments | Rig Technologies
Segment Information
Operating revenues	49,546	63,565	99,702	122,044
Other reconciling items
Segment Information
Operating revenues	$ (14,165)	$ (25,833)	$ (27,539)	$ (50,916)