Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue Recognition
Revenues	$ 767,067	$ 630,943	$ 1,546,206	$ 1,199,482
Operating segments | Lower 48
Revenue Recognition
Revenues	355,720	271,301	746,583	500,851
Operating segments | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	35,439	32,299	69,932	65,976
Operating segments | Alaska
Revenue Recognition
Revenues	10,136	15,868	23,460	30,489
Operating segments | Canada
Revenue Recognition
Revenues	2,456	1,581	4,683	2,996
Operating segments | Middle East & Asia
Revenue Recognition
Revenues	275,078	217,893	526,024	429,413
Operating segments | Latin America
Revenue Recognition
Revenues	95,272	85,668	187,708	160,490
Operating segments | Europe, Africa & CIS
Revenue Recognition
Revenues	18,799	25,691	38,732	47,617
Operating segments | U.S. Drilling
Revenue Recognition
Revenues	314,830	253,008	665,482	470,591
Operating segments | U.S. Drilling | Lower 48
Revenue Recognition
Revenues	272,909	207,685	579,027	380,483
Operating segments | U.S. Drilling | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	32,316	29,933	63,976	60,373
Operating segments | U.S. Drilling | Alaska
Revenue Recognition
Revenues	9,605	15,390	22,479	29,735
Operating segments | International Drilling
Revenue Recognition
Revenues	337,650	296,320	657,698	575,350
Operating segments | International Drilling | Middle East & Asia
Revenue Recognition
Revenues	238,276	195,437	461,228	386,134
Operating segments | International Drilling | Latin America
Revenue Recognition
Revenues	83,583	78,605	164,634	147,500
Operating segments | International Drilling | Europe, Africa & CIS
Revenue Recognition
Revenues	15,791	22,278	31,836	41,716
Operating segments | Drilling Solutions
Revenue Recognition
Revenues	76,855	55,879	151,898	110,061
Operating segments | Drilling Solutions | Lower 48
Revenue Recognition
Revenues	51,157	35,909	102,941	69,970
Operating segments | Drilling Solutions | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	3,123	2,366	5,956	5,603
Operating segments | Drilling Solutions | Alaska
Revenue Recognition
Revenues	531	478	981	754
Operating segments | Drilling Solutions | Canada
Revenue Recognition
Revenues	312	341	670	777
Operating segments | Drilling Solutions | Middle East & Asia
Revenue Recognition
Revenues	11,770	9,449	22,038	19,474
Operating segments | Drilling Solutions | Latin America
Revenue Recognition
Revenues	9,490	7,063	18,560	12,990
Operating segments | Drilling Solutions | Europe, Africa & CIS
Revenue Recognition
Revenues	472	273	752	493
Operating segments | Rig Technologies
Revenue Recognition
Revenues	63,565	45,094	122,044	81,830
Operating segments | Rig Technologies | Lower 48
Revenue Recognition
Revenues	31,654	27,707	64,615	50,398
Operating segments | Rig Technologies | Canada
Revenue Recognition
Revenues	2,144	1,240	4,013	2,219
Operating segments | Rig Technologies | Middle East & Asia
Revenue Recognition
Revenues	25,032	13,007	42,758	23,805
Operating segments | Rig Technologies | Latin America
Revenue Recognition
Revenues	2,199		4,514
Operating segments | Rig Technologies | Europe, Africa & CIS
Revenue Recognition
Revenues	2,536	3,140	6,144	5,408
Eliminations & other
Revenue Recognition
Revenues	$ (25,833)	$ (19,358)	$ (50,916)	$ (38,350)