Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 23, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Revenues:
Total revenues	$ 169,379	$ 556,066	$ 841,278	$ 733,687
Operating expenses:
Depreciation	92,758	68,504	103,478	320,085
General and administrative	15,036	53,494	70,196	56,925
Impairment of assets	197,027	132,449	0	842,016
Restructuring and separation costs	0	0	0	17,724
(Gain) loss on disposition of assets	(5,486)	(1,024)	(4,895)	(7,375)
Total operating expenses	496,438	707,246	904,723	1,886,828
Operating loss	(327,059)	(151,180)	(63,445)	(1,153,141)
Other income (expense):
Interest income	30	3	18	484
Interest expense (excludes $35,390 and $98,027 of contractual interest expense on debt subject to compromise for the period from January 1, 2021 through April 23, 2021 and the year ended December 31, 2020, respectively)	(34,827)	(26,180)	(40,423)	(42,585)
Foreign currency transaction loss	(172)	(997)	(3,023)	(4,498)
Reorganization items, net	(1,639,763)	(8,088)	0	(76,910)
Other, net	398	10,752	1,267	560
Loss before income tax benefit (expense)	(2,001,393)	(175,690)	(105,606)	(1,276,090)
Income tax benefit (expense)	39,404	(1,654)	2,395	21,186
Net loss	$ (1,961,989)	$ (177,344)	$ (103,211)	$ (1,254,904)
Earnings Per Share, Basic	$ (14.21)	$ (1.77)	$ (1.03)	$ (9.09)
Earnings Per Share, Diluted	$ (14.21)	$ (1.77)	$ (1.03)	$ (9.09)
Weighted Average Number of Shares Outstanding, Basic	138,054	100,071	100,561	137,996
Weighted Average Number of Shares Outstanding, Diluted	138,054	100,071	100,561	137,996
Contract Drilling [Member]
Revenues:
Total revenues	$ 153,364	$ 465,328	$ 724,744	$ 692,753
Operating expenses:
Contract drilling, excluding depreciation	181,626	364,539	620,982	618,553
Reimbursable Expenses [Member]
Revenues:
Total revenues	16,015	90,738	116,534	40,934
Operating expenses:
Contract drilling, excluding depreciation	$ 15,477	$ 89,284	$ 114,962	$ 38,900