2.2.0.7 true Commitments and Contingencies (Details) 0611 - Disclosure - Commitments and Contingencies (Details) true false false false 1 false false Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD true false false false Upper range [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_UpperRangeMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 4 USD true false false false Lower range [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_LowerRangeMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 5 USD true false false false Indian Customs Show Cause Notice [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_IndianCustomsShowCauseNoticeMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 6 INR true false false false Indian Customs Show Cause Notice [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_IndianCustomsShowCauseNoticeMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember INR Standard http://www.xbrl.org/2003/iso4217 INR iso4217 0 ₨ false 7 USD true false false false 1997 Alleged Import [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_AllegedImportOneMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 8 USD true false false false 1999 Alleged Import [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_AllegedImportTwoMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 9 USD true false false false Internal Investigation [Member] us-gaap_LossContingenciesByNatureOfContingencyAxis xbrldi http://xbrl.org/2006/xbrldi ne_InternalInvestigationMember us-gaap_LossContingenciesByNatureOfContingencyAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 4 Loss Contingencies [Line Items] 2 us-gaap_LossContingenciesLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:stringItemType string 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. false 5 Bank guarantee in connection with the export of the 'Rig' 3 us-gaap_GuaranteeObligationsMaximumExposure us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 true true false false 3000000 3000000 true false false 6 true true false false 150000000 150000000 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b false 6 Customs bond In connection with the export of the 'Rig' 3 ne_CustomsBond ne false debit instant Customs Bond. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false true false false 21000000 21000000 true false false 6 false true false false 970000000 970000000 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Customs Bond. No authoritative reference available. false 7 Duty imposed, subsequently overturned 3 ne_CustomsDuty ne false debit duration Customs Duty. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false true false false 19000000 19000000 true false false 8 false true false false 22000000 22000000 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Customs Duty. No authoritative reference available. false 8 Audit claims, additional attributable to other business tax returns 3 us-gaap_IncomeTaxExaminationRangeOfPossibleLosses us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 23000000 23000000 true false false 4 false true false false 21000000 21000000 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary The estimated range of reasonably possible losses resulting from an adverse position taken by a taxing authority. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 14 -Paragraph 3 false 9 Accrued settlement provision 3 us-gaap_LossContingencyAccrualAtCarryingValue us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false true false false 5000000 5000000 true false false xbrli:monetaryItemType monetary The carrying amount as of the balance sheet date of the combined total of loss contingency reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 false 10 Commitments and Contingencies (Textuals) 1 ne_CommitmentsAndContingenciesTextualsAbstract ne false na duration Commitments and Contingencies Textuals. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:stringItemType string Commitments and Contingencies Textuals. false 11 Number of parties served Show Cause Notice 2 ne_NumberOfPartiesServedShowCauseNotice ne false na duration Number of parties served Show Cause Notice false false false false false false false false false false false label false 1 false true false false 21 21 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Number of parties served Show Cause Notice No authoritative reference available. false 12 Penalty, subsequently overturned 2 ne_CustomsPenalty ne false debit duration Customs Penalty. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 500000 500000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Customs Penalty. No authoritative reference available. false 13 Number of lawsuits in which we are one of many defendants 2 ne_NumberOfLawsuits ne false na instant Number of Lawsuits. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 39 39 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Number of Lawsuits. No authoritative reference available. false 14 Percentage of uncertain tax positions likelihood of being sustained 2 ne_PercentageOfUncertainTaxPositionsLikelihoodOfBeingSustained ne false na duration Percentage Of Uncertain Tax Positions Likelihood Of Being Sustained. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 0.5 0.5 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false us-types:percentItemType pure Percentage Of Uncertain Tax Positions Likelihood Of Being Sustained. No authoritative reference available. false 15 Non-U.S. tax audit claims (including interest and penalties), primarily in Mexico 2 ne_TaxAuditClaimsAssessed ne false debit duration Tax Audit Claims Assessed. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 191000000 191000000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Tax Audit Claims Assessed. No authoritative reference available. false 16 Likelihood of additional taxes to be incurred on audit findings, percentage 2 ne_LikelihoodOfAdditionalTaxesToBeIncurredOnAuditFindingsPercentage ne false na duration Likelihood Of Additional Taxes To Be Incurred On Audit Findings, Percentage. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 0.5 0.5 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false us-types:percentItemType pure Likelihood Of Additional Taxes To Be Incurred On Audit Findings, Percentage. No authoritative reference available. false 17 NIMASA surcharge on contracts performed by "vessels" in Nigerian coastal shipping trade; overturned and dismissed by Federal High Court of Nigeria 2 ne_PercentSurchargeOnContractAmountsUnderContractPerformed ne false na duration Percent surcharge on contract amounts under contract performed by "vessels". false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 0.02 0.02 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false us-types:percentItemType pure Percent surcharge on contract amounts under contract performed by "vessels". No authoritative reference available. false 18 Physical damage deductible per occurrence for rigs located in the U.S., Mexico, Brazil, 2 ne_PhysicalDamageDeductiblesPerOccurrenceForJackupsAndSubmersiblesInMexicanGulfOfMexico ne false debit duration Physical Damage Deductibles Per Occurrence For Jackups And Submersibles In Mexican Gulf Of Mexico. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 25000000 25000000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Physical Damage Deductibles Per Occurrence For Jackups And Submersibles In Mexican Gulf Of Mexico. No authoritative reference available. false 19 Physical damage deductibles occurrence for rigs operating in West Africa, the Middle East, India, and the Mediterranean Sea 2 ne_PhysicalDamageDeductiblesPerOccurrenceForSemiSubmersiblesAndDrillshipsInMexicanGulfOfMexico ne false debit duration Physical Damage Deductibles Per Occurrence For Semi Submersibles And Drillships In Mexican Gulf Of Mexico. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 15000000 15000000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Physical Damage Deductibles Per Occurrence For Semi Submersibles And Drillships In Mexican Gulf Of Mexico. No authoritative reference available. false 20 Self insured windstorm semisubmersible drill rigs in U.S. Gulf of Mexico 2 ne_SelfInsuredWindstormSemisubmersibleDrillingRigsInUsGulfOfMexico ne false na duration Self Insured Windstorm Semisubmersible Drilling Rigs In Us Gulf Of Mexico. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 6 6 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Self Insured Windstorm Semisubmersible Drilling Rigs In Us Gulf Of Mexico. No authoritative reference available. false 21 Self insured windstorm submersible drilling rigs in U.S. Gulf of Mexico 2 ne_SelfInsuredWindstormSubmersibleDrillingRigsInUsGulfOfMexico ne false na duration Self Insured Windstorm Submersible Drilling Rigs In Us Gulf Of Mexico. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 2 2 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Self Insured Windstorm Submersible Drilling Rigs In Us Gulf Of Mexico. No authoritative reference available. false 22 Loss of hire coverage applies only to 'rigs' operating under dayrate 2 ne_LossOfHireCoverageAppliesOnlyToRigsOperatingUnderDayrate ne false debit duration Loss of hire coverage applies only to 'rigs' operating under dayrate equal to or greater than the given amount. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 200000 200000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Loss of hire coverage applies only to 'rigs' operating under dayrate equal to or greater than the given amount. No authoritative reference available. false 23 Number of days waiting period 2 ne_WaitingPeriod ne false na duration Waiting period. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 45 45 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Waiting period. No authoritative reference available. false 24 Protection and indemnity policy, standard deductible (per occurrence) 2 ne_ProtectionAndIndemnityPolicyStandardDeductible ne false debit duration Protection and indemnity policy, standard deductible. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 10000000 10000000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Protection and indemnity policy, standard deductible. No authoritative reference available. false 25 Maximum liability coverage under protection and indemnity policy 2 ne_MaximumLiabilityCoverageUnderProtectionAndIndemnityPolicy ne false debit duration Maximum liability coverage under protection and indemnity policy. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 750000000 750000000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary Maximum liability coverage under protection and indemnity policy. No authoritative reference available. false 26 Outstanding commitments including shipyard and purchase commitments 2 us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 true true false false 904000000 904000000 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 7 -Subparagraph b false 27 Years of effectiveness of employment agreements after the termination of employment 2 ne_YearsOfEffectivenessOfEmploymentAgreementsAfterTerminationOfEmployment ne false na duration Years of effectiveness of employment agreements after the termination of employment. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 3 3 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Years of effectiveness of employment agreements after the termination of employment. No authoritative reference available. false 28 Jackup rigs offshore Nigeria 2 ne_JackupRigsOffShoreNigeria ne false na duration Jackup Rigs Off Shore Nigeria. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 3 3 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Jackup Rigs Off Shore Nigeria. No authoritative reference available. false 29 Expired temporary import permits for jackup rigs offshore of Nigeria, new applications pending 2 ne_ExpiredTemporaryImportPermitsForJackupRigsOffShoreNigeria ne false na duration Expired temporary Import Permits For Jackup Rigs Off Shore Nigeria. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 2 2 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Expired temporary Import Permits For Jackup Rigs Off Shore Nigeria. No authoritative reference available. false 30 Number of rigs which have import duties and fines 2 ne_NumberOfRigWhichHaveImportDutiesAndFines ne false na duration Number of rig which have import duties and fines. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 2 2 false false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false xbrli:integerItemType integer Number of rig which have import duties and fines. No authoritative reference available. false 9 27 false NoRounding UnKnown UnKnown false true