Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue Recognition
Revenues	$ 2,653,766	$ 2,017,548	$ 2,134,043
U.S. Drilling
Revenue Recognition
Revenues	1,100,614	669,656	713,057
Canada Drilling
Revenue Recognition
Revenues		39,336	54,753
International Drilling
Revenue Recognition
Revenues	1,199,282	1,043,197	1,131,673
Drilling Solutions
Revenue Recognition
Revenues	243,349	172,473	149,834
Rig Technologies
Revenue Recognition
Revenues	195,129	149,273	131,555
Other
Revenue Recognition
Revenues	(84,608)	(56,387)	(46,829)
Operating segments | Lower 48
Revenue Recognition
Revenues	1,182,838	679,484	691,963
Operating segments | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	133,201	137,110	135,601
Operating segments | Alaska
Revenue Recognition
Revenues	65,880	29,265	39,221
Operating segments | Canada
Revenue Recognition
Revenues	7,247	45,057	59,461
Operating segments | Middle East & Asia
Revenue Recognition
Revenues	911,940	807,078	827,501
Operating segments | Latin America
Revenue Recognition
Revenues	340,338	273,485	235,685
Operating segments | Europe, Africa & CIS
Revenue Recognition
Revenues	96,930	102,456	191,440
Operating segments | U.S. Drilling
Revenue Recognition
Revenues	1,100,614	669,656	713,057
Operating segments | U.S. Drilling | Lower 48
Revenue Recognition
Revenues	913,932	512,880	548,859
Operating segments | U.S. Drilling | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	122,536	128,323	126,292
Operating segments | U.S. Drilling | Alaska
Revenue Recognition
Revenues	64,146	28,453	37,906
Operating segments | Canada Drilling
Revenue Recognition
Revenues		39,336	54,753
Operating segments | Canada Drilling | Canada
Revenue Recognition
Revenues		39,336	54,753
Operating segments | International Drilling
Revenue Recognition
Revenues	1,199,282	1,043,197	1,131,673
Operating segments | International Drilling | Middle East & Asia
Revenue Recognition
Revenues	805,944	706,267	728,983
Operating segments | International Drilling | Latin America
Revenue Recognition
Revenues	309,320	251,153	228,930
Operating segments | International Drilling | Europe, Africa & CIS
Revenue Recognition
Revenues	84,018	85,777	173,760
Operating segments | Drilling Solutions
Revenue Recognition
Revenues	243,349	172,473	149,834
Operating segments | Drilling Solutions | Lower 48
Revenue Recognition
Revenues	157,709	97,354	88,919
Operating segments | Drilling Solutions | U.S. Offshore Gulf Of Mexico
Revenue Recognition
Revenues	10,665	8,787	9,309
Operating segments | Drilling Solutions | Alaska
Revenue Recognition
Revenues	1,734	753	1,296
Operating segments | Drilling Solutions | Canada
Revenue Recognition
Revenues	1,521	1,342	1,137
Operating segments | Drilling Solutions | Middle East & Asia
Revenue Recognition
Revenues	41,257	40,492	40,255
Operating segments | Drilling Solutions | Latin America
Revenue Recognition
Revenues	29,515	22,104	6,578
Operating segments | Drilling Solutions | Europe, Africa & CIS
Revenue Recognition
Revenues	948	1,641	2,340
Operating segments | Rig Technologies
Revenue Recognition
Revenues	195,129	149,273	131,555
Operating segments | Rig Technologies | Lower 48
Revenue Recognition
Revenues	111,197	69,250	54,185
Operating segments | Rig Technologies | Alaska
Revenue Recognition
Revenues		59	19
Operating segments | Rig Technologies | Canada
Revenue Recognition
Revenues	5,726	4,379	3,571
Operating segments | Rig Technologies | Middle East & Asia
Revenue Recognition
Revenues	64,739	60,319	58,263
Operating segments | Rig Technologies | Latin America
Revenue Recognition
Revenues	1,503	228	177
Operating segments | Rig Technologies | Europe, Africa & CIS
Revenue Recognition
Revenues	11,964	15,038	15,340
Eliminations & other
Revenue Recognition
Revenues	(84,608)	(56,387)	(46,829)
Eliminations & other | Other
Revenue Recognition
Revenues	$ (84,608)	$ (56,387)	$ (46,829)