Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue Recognition
Revenues	$ 731,805	$ 733,974	$ 2,200,307	$ 2,280,180
Operating segments | Lower 48
Revenue Recognition
Revenues	279,960	314,999	871,091	1,061,583
Operating segments | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	27,479	28,742	89,984	98,673
Operating segments | Alaska
Revenue Recognition
Revenues	12,626	9,186	35,726	32,646
Operating segments | Canada
Revenue Recognition
Revenues	1,352	1,993	5,333	6,676
Operating segments | Middle East & Asia
Revenue Recognition
Revenues	283,128	281,671	846,382	807,695
Operating segments | Latin America
Revenue Recognition
Revenues	118,236	101,815	333,269	289,522
Operating segments | Europe, Africa & CIS
Revenue Recognition
Revenues	25,939	17,027	62,976	55,760
Operating segments | U.S. Drilling
Revenue Recognition
Revenues	254,773	276,385	786,485	941,867
Operating segments | U.S. Drilling | Lower 48
Revenue Recognition
Revenues	217,138	241,900	670,060	820,927
Operating segments | U.S. Drilling | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	25,510	25,768	82,555	89,744
Operating segments | U.S. Drilling | Alaska
Revenue Recognition
Revenues	12,125	8,717	33,870	31,196
Operating segments | International Drilling
Revenue Recognition
Revenues	368,594	344,780	1,074,686	1,002,478
Operating segments | International Drilling | Middle East & Asia
Revenue Recognition
Revenues	250,740	243,691	751,271	704,918
Operating segments | International Drilling | Latin America
Revenue Recognition
Revenues	94,140	86,665	266,416	251,300
Operating segments | International Drilling | Europe, Africa & CIS
Revenue Recognition
Revenues	23,714	14,424	56,999	46,260
Operating segments | Drilling Solutions
Revenue Recognition
Revenues	79,544	72,831	238,079	224,729
Operating segments | Drilling Solutions | Lower 48
Revenue Recognition
Revenues	42,161	45,646	134,296	148,587
Operating segments | Drilling Solutions | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	1,969	2,974	7,429	8,929
Operating segments | Drilling Solutions | Alaska
Revenue Recognition
Revenues	501	469	1,856	1,450
Operating segments | Drilling Solutions | Canada
Revenue Recognition
Revenues	416	467	1,282	1,137
Operating segments | Drilling Solutions | Middle East & Asia
Revenue Recognition
Revenues	13,321	10,550	37,363	32,587
Operating segments | Drilling Solutions | Latin America
Revenue Recognition
Revenues	20,735	11,885	54,789	30,446
Operating segments | Drilling Solutions | Europe, Africa & CIS
Revenue Recognition
Revenues	441	840	1,064	1,593
Operating segments | Rig Technologies
Revenue Recognition
Revenues	45,809	61,437	145,511	183,481
Operating segments | Rig Technologies | Lower 48
Revenue Recognition
Revenues	20,661	27,453	66,735	92,069
Operating segments | Rig Technologies | Canada
Revenue Recognition
Revenues	936	1,526	4,051	5,539
Operating segments | Rig Technologies | Middle East & Asia
Revenue Recognition
Revenues	19,067	27,430	57,748	70,190
Operating segments | Rig Technologies | Latin America
Revenue Recognition
Revenues	3,361	3,265	12,064	7,776
Operating segments | Rig Technologies | Europe, Africa & CIS
Revenue Recognition
Revenues	1,784	1,763	4,913	7,907
Eliminations & other
Revenue Recognition
Revenues	$ (16,915)	$ (21,459)	$ (44,454)	$ (72,375)