XML 67 R55.htm IDEA: XBRL DOCUMENT
v3.21.1

Earnings Per Share (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Aug. 18, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Restructuring Cost and Reserve [Line Items] |  |  |
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent |  | $ (910.0) | $ (3,000.0)
Income (Loss) from Continuing Operations Attributable to Parent, Available to Common Stockholders |  | $ (910.0) | $ (3,000.0)
Antidilutive share options excluded from computation of diluted earnings per share (in shares) |  | 300,000 | 400,000
Holders Of Equity Interests |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Warrants term | 7 years |  |
Warrants for new equity | 7.00% |  |
Senior Noteholders |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Recovery of claims | 100.00% |  |

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4613673-111683 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
Name: | us-gaap_IncomeLossFromContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Income (Loss) from Continuing Operations Attributable to Parent, Available to Common Stockholders + References No definition available. + Details
Name: | val_IncomeLossfromContinuingOperationsAttributabletoParentAvailabletoCommonStockholders
Namespace Prefix: | val_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Plan Of Reorganization, Recovery Of Claims, Percentage + References No definition available. + Details
Name: | val_PlanOfReorganizationRecoveryOfClaimsPercentage
Namespace Prefix: | val_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Plan Of Reorganization, Warrants For New Equity + References No definition available. + Details
Name: | val_PlanOfReorganizationWarrantsForNewEquity
Namespace Prefix: | val_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Plan Of Reorganization, Warrants Term + References No definition available. + Details
Name: | val_PlanOfReorganizationWarrantsTerm
Namespace Prefix: | val_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | val_PlanOfReorganizationParticipantsAxis=val_HoldersOfEquityInterestsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | val_PlanOfReorganizationParticipantsAxis=val_SeniorNoteholdersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |