XML 69 R58.htm IDEA: XBRL DOCUMENT v3.25.1

Supplemental Financial Information Schedule of Revenue by Major Customers, by Reporting Segments (Details) - Revenue Benchmark [Member] - Customer Concentration Risk	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%
Petrobras S.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	13.00%	9.00%
British Petroleum
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	12.00%	16.00%
Eni S.p.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	7.00%
Equinor A S A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	7.00%	11.00%
Other Customers
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	58.00%	57.00%
Floaters
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	59.00%	62.00%
Floaters | Petrobras S.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	13.00%	9.00%
Floaters | British Petroleum
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	5.00%	6.00%
Floaters | Eni S.p.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	2.00%
Floaters | Equinor A S A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	7.00%	11.00%
Floaters | Other Customers
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	34.00%	34.00%
Jackups
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	34.00%	29.00%
Jackups | Petrobras S.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	0.00%
Jackups | British Petroleum
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	3.00%	4.00%
Jackups | Eni S.p.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	5.00%
Jackups | Equinor A S A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	0.00%
Jackups | Other Customers
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	21.00%	20.00%
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	7.00%	9.00%
Other | Petrobras S.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	0.00%
Other | British Petroleum
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	4.00%	6.00%
Other | Eni S.p.A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	0.00%
Other | Equinor A S A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	0.00%
Other | Other Customers
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	3.00%	3.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 20
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_EntityWideRevenueMajorCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=val_PetrobrasS.AMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=val_BritishPetroleumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=val_EniSpAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=val_EquinorASAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=val_OtherCustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=val_FloatersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=val_JackupsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: