XML 117 R97.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Commitments And Contingencies (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) drillship jackup
Commitments and Contingencies Disclosure [Abstract] |
ARO Rigs Under Construction | drillship | 2
Order Period | 10 years
Number of newbuild jackup rigs | jackup | 20
Letters of Credit Outstanding, Amount | $ 36.5
Cost of ARO newbuild jackups, each | 176.0
Maximum contingent contributions to joint venture | $ 1,250.0
Minimum renewal contract terms for newbuild rigs | 8 years
Deposit Liabilities, Collateral Issued, Financial Instruments | $ 31.1

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818 + Details
Name: | us-gaap_DepositLiabilitiesCollateralIssuedFinancialInstruments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition ARO Rigs Under Construction + References No definition available. + Details
Name: | val_ARORigsUnderConstruction
Namespace Prefix: | val_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Cost of ARO newbuild jackups, each + References No definition available. + Details
Name: | val_CostOfARONewbuildJackupsEach
Namespace Prefix: | val_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum Contingent Contributions To Joint Venture + References No definition available. + Details
Name: | val_MaximumContingentContributionsToJointVenture
Namespace Prefix: | val_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum Renewal Contract Terms For NewBuild Rigs + References No definition available. + Details
Name: | val_MinimumRenewalContractTermsForNewBuildRigs
Namespace Prefix: | val_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Newbuild Jackup Rigs + References No definition available. + Details
Name: | val_NumberofNewbuildJackupRigs
Namespace Prefix: | val_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Order Period + References No definition available. + Details
Name: | val_OrderPeriod
Namespace Prefix: | val_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration