XML 52 R40.htm IDEA: XBRL DOCUMENT v3.25.3

Property, Plant, and Equipment Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended				6 Months Ended	9 Months Ended		24 Months Ended
	Apr. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Mar. 31, 2025 USD ($) drillship	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2025 USD ($) drillship	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2027 USD ($)
Property, Plant and Equipment [Line Items]
Proceeds from disposition of assets							$ 136.3	$ 0.2
Loss on impairment		$ 0.0			$ 0.0		7.8	0.0
Semisubmersible Rigs, Retired | drillship			3			3
Proceeds from disposition of assets							136.3	0.2
Loss on impairment		0.0			0.0		7.8	0.0
Angola office
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Other Assets			$ 4.0
Proceeds from disposition of assets			2.7	$ 2.5		$ 5.2
Proceeds from disposition of assets			2.7	$ 2.5		$ 5.2
Operating Segments | Jackups
Property, Plant and Equipment [Line Items]
Loss on impairment					0.0		0.0	0.0
Loss on impairment					0.0		0.0	0.0
Operating Segments | Floaters
Property, Plant and Equipment [Line Items]
Loss on impairment					0.0		7.8	0.0
Loss on impairment					$ 0.0		$ 7.8	$ 0.0
V75 | Operating Segments | Jackups Member
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Other Assets			23.0
Proceeds from disposition of assets			14.0
Proceeds from disposition of assets			14.0
V75 | Operating Segments | Jackups Member | Subsequent Event
Property, Plant and Equipment [Line Items]
Proceeds from disposition of assets									$ 10.0
Proceeds from disposition of assets									$ 10.0
DPS-3, DPS-5 & DPS-6 | Operating Segments | Floaters
Property, Plant and Equipment [Line Items]
Proceeds from disposition of assets	$ 10.0
Loss on impairment			7.8
Proceeds from disposition of assets	$ 10.0
Loss on impairment			$ 7.8
V247 | Operating Segments | Jackups Member
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Other Assets		88.4
Proceeds from disposition of assets		108.0
Proceeds from disposition of assets		$ 108.0

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 942
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480095/942-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 942
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480035/942-10-S99-6

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482130/360-10-45-4

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of gain (loss) on sale or disposal of other assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_GainLossOnSaleOfOtherAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

+ Details

Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

+ Details

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

X

- Definition

Semisubmersible Rigs, Retired

+ References

No definition available.

+ Details

Name:	val_SemisubmersibleRigsRetired
Namespace Prefix:	val_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=val_AngolaOfficeBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	val_DrillingRigsAxis=val_V75Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	val_DrillingRigsAxis=val_DPS3DPS5DPS6Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	val_DrillingRigsAxis=val_V247Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: