Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue Recognition
Revenues	$ 733,974	$ 694,136	$ 2,280,180	$ 1,893,618
Operating segments | Lower 48
Revenue Recognition
Revenues	314,999	315,130	1,061,583	815,978
Operating segments | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	28,742	33,584	98,673	99,560
Operating segments | Alaska
Revenue Recognition
Revenues	9,186	19,310	32,646	49,798
Operating segments | Canada
Revenue Recognition
Revenues	1,993	1,722	6,676	4,719
Operating segments | Middle East & Asia
Revenue Recognition
Revenues	281,671	233,912	807,695	663,326
Operating segments | Latin America
Revenue Recognition
Revenues	101,815	87,304	289,522	247,795
Operating segments | Europe, Africa & CIS
Revenue Recognition
Revenues	17,027	25,048	55,760	72,666
Operating segments | U.S. Drilling
Revenue Recognition
Revenues	276,385	297,178	941,867	767,769
Operating segments | U.S. Drilling | Lower 48
Revenue Recognition
Revenues	241,900	247,290	820,927	627,774
Operating segments | U.S. Drilling | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	25,768	31,108	89,744	91,481
Operating segments | U.S. Drilling | Alaska
Revenue Recognition
Revenues	8,717	18,780	31,196	48,514
Operating segments | International Drilling
Revenue Recognition
Revenues	344,780	306,355	1,002,478	881,705
Operating segments | International Drilling | Middle East & Asia
Revenue Recognition
Revenues	243,691	204,544	704,918	590,678
Operating segments | International Drilling | Latin America
Revenue Recognition
Revenues	86,665	79,366	251,300	226,866
Operating segments | International Drilling | Europe, Africa & CIS
Revenue Recognition
Revenues	14,424	22,445	46,260	64,161
Operating segments | Drilling Solutions
Revenue Recognition
Revenues	72,831	61,981	224,729	172,042
Operating segments | Drilling Solutions | Lower 48
Revenue Recognition
Revenues	45,646	40,561	148,587	110,527
Operating segments | Drilling Solutions | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	2,974	2,476	8,929	8,079
Operating segments | Drilling Solutions | Alaska
Revenue Recognition
Revenues	469	530	1,450	1,284
Operating segments | Drilling Solutions | Canada
Revenue Recognition
Revenues	467	368	1,137	1,146
Operating segments | Drilling Solutions | Middle East & Asia
Revenue Recognition
Revenues	10,550	10,044	32,587	29,520
Operating segments | Drilling Solutions | Latin America
Revenue Recognition
Revenues	11,885	7,849	30,446	20,840
Operating segments | Drilling Solutions | Europe, Africa & CIS
Revenue Recognition
Revenues	840	153	1,593	646
Operating segments | Rig Technologies
Revenue Recognition
Revenues	61,437	50,496	183,481	132,326
Operating segments | Rig Technologies | Lower 48
Revenue Recognition
Revenues	27,453	27,279	92,069	77,677
Operating segments | Rig Technologies | Canada
Revenue Recognition
Revenues	1,526	1,354	5,539	3,573
Operating segments | Rig Technologies | Middle East & Asia
Revenue Recognition
Revenues	27,430	19,324	70,190	43,128
Operating segments | Rig Technologies | Latin America
Revenue Recognition
Revenues	3,265	89	7,776	89
Operating segments | Rig Technologies | Europe, Africa & CIS
Revenue Recognition
Revenues	1,763	2,450	7,907	7,859
Eliminations & other
Revenue Recognition
Revenues	$ (21,459)	$ (21,874)	$ (72,375)	$ (60,224)