XML 76 R63.htm IDEA: XBRL DOCUMENT
v3.21.2

Contingencies (Narrative) (Details) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 USD ($) drillship jackup
Commitments and Contingencies Disclosure [Abstract] |
Number of Newbuild Jackup Rigs | jackup | 20
Order Period | 10 years
ARO Rigs Under Construction | drillship | 2
Percentage of Down Payment Paid for ARO Newbuilds | 25.00%
Maximum Contingent Contributions To Joint Venture | $ 1,250.0
Minimum Renewal Contract Terms For NewBuild Rigs | 8 years
Letters of credit outstanding, amount | $ 114.4
Deposit Liabilities, Collateral Issued, Financial Instruments | $ 37.4

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 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

X
- Definition Percentage of Down Payment Paid for ARO Newbuilds + References No definition available. + Details
Name: | val_PercentageOfDownPaymentPaidForARONewbuilds
Namespace Prefix: | val_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant