Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue Recognition
Revenues	$ 694,136	$ 524,165	$ 1,893,618	$ 1,474,009
U.S. Drilling
Revenue Recognition
Revenues	297,178	173,441	767,769	477,346
Canada Drilling
Revenue Recognition
Revenues		6,034		39,336
International Drilling
Revenue Recognition
Revenues	306,355	270,008	881,705	772,128
Drilling Solutions
Revenue Recognition
Revenues	61,981	45,880	172,042	120,697
Rig Technologies
Revenue Recognition
Revenues	50,496	42,053	132,326	102,353
Operating segments | Lower 48
Revenue Recognition
Revenues	315,130	176,596	815,978	475,362
Operating segments | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	33,584	36,697	99,560	101,414
Operating segments | Alaska
Revenue Recognition
Revenues	19,310	5,903	49,798	19,086
Operating segments | Canada
Revenue Recognition
Revenues	1,722	7,420	4,719	43,663
Operating segments | Middle East & Asia
Revenue Recognition
Revenues	233,912	211,167	663,326	594,796
Operating segments | Latin America
Revenue Recognition
Revenues	87,304	76,256	247,795	200,495
Operating segments | Europe, Africa & CIS
Revenue Recognition
Revenues	25,048	23,377	72,666	77,044
Operating segments | U.S. Drilling
Revenue Recognition
Revenues	297,178	173,441	767,769	477,346
Operating segments | U.S. Drilling | Lower 48
Revenue Recognition
Revenues	247,290	132,639	627,774	363,536
Operating segments | U.S. Drilling | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	31,108	35,063	91,481	95,222
Operating segments | U.S. Drilling | Alaska
Revenue Recognition
Revenues	18,780	5,739	48,514	18,588
Operating segments | Canada Drilling
Revenue Recognition
Revenues		6,034		39,336
Operating segments | Canada Drilling | Canada
Revenue Recognition
Revenues		6,034		39,336
Operating segments | International Drilling
Revenue Recognition
Revenues	306,355	270,008	881,705	772,128
Operating segments | International Drilling | Middle East & Asia
Revenue Recognition
Revenues	204,544	179,617	590,678	522,142
Operating segments | International Drilling | Latin America
Revenue Recognition
Revenues	79,366	70,692	226,866	184,531
Operating segments | International Drilling | Europe, Africa & CIS
Revenue Recognition
Revenues	22,445	19,699	64,161	65,455
Operating segments | Drilling Solutions
Revenue Recognition
Revenues	61,981	45,880	172,042	120,697
Operating segments | Drilling Solutions | Lower 48
Revenue Recognition
Revenues	40,561	26,917	110,527	66,801
Operating segments | Drilling Solutions | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	2,476	1,634	8,079	6,192
Operating segments | Drilling Solutions | Alaska
Revenue Recognition
Revenues	530	163	1,284	484
Operating segments | Drilling Solutions | Canada
Revenue Recognition
Revenues	368	340	1,146	998
Operating segments | Drilling Solutions | Middle East & Asia
Revenue Recognition
Revenues	10,044	10,872	29,520	29,320
Operating segments | Drilling Solutions | Latin America
Revenue Recognition
Revenues	7,849	5,564	20,840	15,788
Operating segments | Drilling Solutions | Europe, Africa & CIS
Revenue Recognition
Revenues	153	390	646	1,114
Operating segments | Rig Technologies
Revenue Recognition
Revenues	50,496	42,053	132,326	102,353
Operating segments | Rig Technologies | Lower 48
Revenue Recognition
Revenues	27,279	17,040	77,677	45,025
Operating segments | Rig Technologies | Alaska
Revenue Recognition
Revenues		1		14
Operating segments | Rig Technologies | Canada
Revenue Recognition
Revenues	1,354	1,046	3,573	3,329
Operating segments | Rig Technologies | Middle East & Asia
Revenue Recognition
Revenues	19,324	20,678	43,128	43,334
Operating segments | Rig Technologies | Latin America
Revenue Recognition
Revenues	89		89	176
Operating segments | Rig Technologies | Europe, Africa & CIS
Revenue Recognition
Revenues	2,450	3,288	7,859	10,475
Eliminations & other
Revenue Recognition
Revenues	(21,874)	(13,251)	(60,224)	(37,851)
Eliminations & other | Other
Revenue Recognition
Revenues	$ (21,874)	$ (13,251)	$ (60,224)	$ (37,851)