Segment Information - Financial Information by Segment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Segment Information
Number of reportable segments | segment	4
Operating revenues	$ 2,930,126	$ 3,005,981	$ 2,653,766
Direct costs	(1,742,411)	(1,790,380)	(1,666,004)
Depreciation and amortization	(633,408)	(645,294)	(665,072)
Other segment expenses	(306,380)	(300,444)	(278,370)
Total adjusted operating income (loss)	247,927	269,863	44,320
Capital expenditures	609,727	552,908	381,487
Operating Segments
Segment Information
Operating revenues	2,989,962	3,097,403	2,738,374
Direct costs	(1,785,968)	(1,866,216)	(1,735,904)
Depreciation and amortization	(630,671)	(645,595)	(667,717)
Other segment expenses	(156,554)	(151,885)	(140,352)
Total adjusted operating income (loss)	416,769	433,707	194,401
Capital expenditures	593,551	540,870	375,722
Operating Segments | U.S. Drilling
Segment Information
Operating revenues	1,028,122	1,207,629	1,100,614
Direct costs	(554,527)	(647,251)	(652,899)
Depreciation and amortization	(272,559)	(271,310)	(311,759)
Other segment expenses	(24,755)	(26,715)	(27,450)
Total adjusted operating income (loss)	176,281	262,353	108,506
Capital expenditures	110,822	136,311	118,017
Operating Segments | International Drilling
Segment Information
Operating revenues	1,446,092	1,345,249	1,199,282
Direct costs	(941,118)	(892,182)	(813,418)
Depreciation and amortization	(328,924)	(347,786)	(329,335)
Other segment expenses	(68,192)	(64,413)	(57,408)
Total adjusted operating income (loss)	107,858	40,868	(879)
Capital expenditures	459,175	357,609	222,099
Operating Segments | Drilling Solutions
Segment Information
Operating revenues	314,071	301,757	243,349
Direct costs	(151,387)	(145,139)	(118,452)
Depreciation and amortization	(19,988)	(18,634)	(20,829)
Other segment expenses	(30,309)	(27,027)	(26,200)
Total adjusted operating income (loss)	112,387	110,957	77,868
Capital expenditures	17,787	25,721	19,946
Operating Segments | Rig Technologies
Segment Information
Operating revenues	201,677	242,768	195,129
Direct costs	(138,936)	(181,644)	(151,135)
Depreciation and amortization	(9,200)	(7,865)	(5,794)
Other segment expenses	(33,298)	(33,730)	(29,294)
Total adjusted operating income (loss)	20,243	19,529	8,906
Capital expenditures	5,767	21,229	15,660
Other items
Segment Information
Operating revenues	(59,836)	(91,422)	(84,608)
Direct costs	43,557	75,836	69,900
Depreciation and amortization	(2,737)	301	2,645
Other segment expenses	(149,826)	(148,559)	(138,018)
Total adjusted operating income (loss)	(168,842)	(163,844)	(150,081)
Capital expenditures	$ 16,176	$ 12,038	$ 5,765