Segments and Geographic Area Analysis (Tables)

12 Months Ended

Dec. 31, 2023

Segment Reporting [Abstract]

Summary of Information About Disaggregated Revenue by Equipment type and Country

The following tables provide information about disaggregated revenue by equipment-type and country (in thousands):

	Successor
	Year Ended December 31, 2023
	Total Contract Drilling Revenues		Revenues Related to Reimbursable Expenses		Total
United States	$	513,226	$	36,645	$	549,871
Senegal		169,223		11,586		180,809
United Kingdom		168,894		14,708		183,602
Australia		67,846		9,257		77,103
Brazil		64,794		—		64,794
Total	$	983,983	$	72,196	$	1,056,179

	Successor
	Year Ended December 31, 2022
	Total Contract Drilling Revenues		Revenues Related to Reimbursable Expenses		Total
United States	$	322,021	$	75,069	$	397,090
Senegal		154,574		11,929		166,503
United Kingdom		66,116		8,478		74,594
Australia		92,939		14,082		107,021
Brazil		80,185		—		80,185
Myanmar		8,909		6,976		15,885
Total	$	724,744	$	116,534	$	841,278

	Successor
	Period from April 24, 2021 through December 31, 2021
	Total Contract Drilling Revenues		Revenues Related to Reimbursable Expenses		Total
United States	$	194,912	$	55,471	$	250,383
Senegal		48,758		10,110		58,868
United Kingdom		55,245		3,859		59,104
Australia		95,601		15,132		110,733
Brazil		42,215		—		42,215
Myanmar		28,597		6,166		34,763
Total	$	465,328	$	90,738	$	556,066

	Predecessor
	Period from January 1, 2021 through April 23, 2021
	Total Contract Drilling Revenues		Revenues Related to Reimbursable Expenses		Total
United States	$	93,215	$	7,048	$	100,263
United Kingdom		27,967		2,300		30,267
Australia		17,031		4,697		21,728
Brazil		3,421		—		3,421
Myanmar		11,730		1,970		13,700
Total	$	153,364	$	16,015	$	169,379

Long-Lived Tangible Assets by Country

The following table presents the locations of our long-lived tangible assets by country as of December 31, 2023, 2022 and 2021. A substantial portion of our assets is comprised of rigs that are mobile and, therefore, asset locations at the end of the period are not necessarily indicative of the geographic distribution of the earnings generated by such assets during the periods and may vary from period to period due to the relocation of rigs. In circumstances where our drilling rigs were in transit at the end of a calendar year, they have been presented in the tables below within the country in which they were expected to operate (in thousands).

	December 31,
Drilling and other property and equipment, net:	2023		2022		2021
United States	$	543,930	$	362,813	$	559,288
International:
United Kingdom		251,049		256,837		98,338
Senegal		169,627		352,655		188,694
Australia		98,793		91,089		106,173
Brazil		86,057		69,596		76,383
Spain (1)		—		—		142,930
Other countries (2)		6,912		8,918		4,089
		612,438		779,095		616,607
Total	$	1,156,368	$	1,141,908	$	1,175,895

(1)The Ocean GreatWhite was relocated to the U.K. in 2022 for reactivation and contract preparation activities.

(2)Countries with long-lived assets that individually comprise less than 5% of total drilling and other property and equipment, net of accumulated depreciation.

Revenues from Major Customers that Contributed More than 10% of Total Revenues

Revenues from our major customers for the Successor periods for the years ended December 31, 2023 and 2022 and the period from April 24, 2021 through December 31, 2021 and the Predecessor period from January 1, 2021 through April 23, 2021 that contributed more than 10% of our total revenues are as follows:

	Successor									Predecessor
	Year Ended						Period from			Period from
	December 31,						April 24, 2021 through			January 1, 2021 through
	2023 (1)			2022 (1)			December 31, 2021 (1)			April 23, 2021
BP		48.4	%		33.1	%		25.4	%		39.8	%
Woodside		21.5	%		29.7	%		22.4	%		0.5	%
Oxy		2.9	%		3.9	%		11.5	%		21.4	%