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$ false 4 USD true false false false us-gaap_SubsidiariesMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 5 USD true false false false us-gaap_MoreThanFourAndWithinFiveYearsFromBalanceSheetDateMember us-gaap_DebtInstrumentAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoreThanFourAndWithinFiveYearsFromBalanceSheetDateMember us-gaap_DebtInstrumentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 6 USD true false false false ne_SubsidiaryOneMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 7 USD true false false false ne_SubsidiaryOneMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 8 USD true false false false ne_SubsidiaryOneMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 9 USD true false false false ne_SubsidiaryOneMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 10 USD true false false false ne_SubsidiaryOneMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 11 USD true false false false ne_CombinedSubsidiariesMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi 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ne_CombinedSubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 16 USD true false false false ne_SubsidiaryThreeMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryThreeMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 17 USD true false false false ne_SubsidiaryThreeMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryThreeMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 18 USD true false false false ne_SubsidiaryThreeMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryThreeMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 19 USD true false false false ne_SubsidiaryThreeMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryThreeMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 20 USD true false false false ne_SubsidiaryThreeMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryThreeMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 21 USD true false false false ne_SubsidiaryTwoMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 22 USD true false false false ne_SubsidiaryTwoMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 23 USD true false false false ne_SubsidiaryTwoMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 24 USD true false false false ne_SubsidiaryTwoMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 25 USD true false false false ne_SubsidiaryTwoMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 26 USD true false false false ne_SubsidiaryTwoMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 27 USD true false false false ne_SubsidiaryFourMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryFourMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 28 USD true false false false ne_SubsidiaryFourMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryFourMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 29 USD true false false false ne_SubsidiaryFourMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryFourMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 30 USD true false false false ne_SubsidiaryFourMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_SubsidiaryFourMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 31 USD true false false false ne_OtherSubsidiariesMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_OtherSubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 32 USD true false false false ne_OtherSubsidiariesMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_OtherSubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 33 USD true false false false ne_OtherSubsidiariesMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_OtherSubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 34 USD true false false false ne_OtherSubsidiariesMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ne_OtherSubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 35 USD true false false false us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 36 USD true false false false us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 37 USD true false false false us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 38 USD true false false false us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 39 USD true false false false us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ConsolidationEliminationsMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 7 5 us-gaap_AssetsCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 8 6 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 1075463000 1075463000 true false false 2 true true false false 1075463000 1075463000 true false false 3 true true false false 671401000 671401000 true false false 4 true true false false 726225000 726225000 true false false 5 false false false false 0 0 true false false 6 true true false false 1702000 1702000 true false false 7 true true false false 4072000 4072000 true false false 8 true true false false 1702000 1702000 true false false 9 true true false false 4072000 4072000 true false false 10 true true false false 3000 3000 true false false 11 true true false false 195000 195000 true false false 12 true true false false 258000 258000 true false false 13 true true false false 195000 195000 true false false 14 true true false false 258000 258000 true false false 15 true true false false 268000 268000 true false false 16 true true false false 0 0 true false false 17 true true false false 4210000 4210000 true false false 18 true true false false 0 0 true false false 19 true true false false 4210000 4210000 true false false 20 true true false false 0 0 true false false 21 true true false false 0 0 true false false 22 false false false false 0 0 true false false 23 true true false false 0 0 true false false 24 false false false false 0 0 true false false 25 true true false false 0 0 true false false 26 false false false false 0 0 true false false 27 true true false false 0 0 true false false 28 true true false false 0 0 true false false 29 false false false false 0 0 true false false 30 true true false false 0 0 true false false 31 true true false false 1073566000 1073566000 true false false 32 true true false false 1073566000 1073566000 true false false 33 true true false false 662861000 662861000 true false false 34 true true false false 725954000 725954000 true false false 35 true true false false 0 0 true false false 36 false false false false 0 0 true false false 37 true true false false 0 0 true false false 38 false false false false 0 0 true false false 39 true true false false 0 0 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 9 6 us-gaap_ReceivablesNetCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 471348000 471348000 true false false 2 false true false false 471348000 471348000 true false false 3 false false false false 0 0 true false false 4 false true false false 647454000 647454000 true false false 5 false false false false 0 0 true false false 6 false true false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 0 0 true false false 9 false false false false 0 0 true false false 10 false true false false 0 0 true false false 11 false true false false 4474000 4474000 true false false 12 false false false false 0 0 true false false 13 false true false false 4474000 4474000 true false false 14 false false false false 0 0 true false false 15 false true false false 7509000 7509000 true false false 16 false true false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false false false false 0 0 true false false 20 false true false false 0 0 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 466874000 466874000 true false false 32 false true false false 466874000 466874000 true false false 33 false false false false 0 0 true false false 34 false true false false 639945000 639945000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a -Article 5 false 10 6 us-gaap_DueFromRelatedPartiesCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 309018000 309018000 true false false 2 false true false false 309018000 309018000 true false false 3 false false false false 0 0 true false false 4 false true false false 191004000 191004000 true false false 5 false false false false 0 0 true false false 6 false true false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 0 0 true false false 9 false false false false 0 0 true false false 10 false true false false 0 0 true false false 11 false true false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 0 0 true false false 14 false false false false 0 0 true false false 15 false true false false 0 0 true false false 16 false true false false 653601000 653601000 true false false 17 false false false false 0 0 true false false 18 false true false false 653601000 653601000 true false false 19 false false false false 0 0 true false false 20 false true false false 573339000 573339000 true false false 21 false true false false 246889000 246889000 true false false 22 false false false false 0 0 true false false 23 false true false false 246889000 246889000 true false false 24 false false false false 0 0 true false false 25 false true false false 251677000 251677000 true false false 26 false false false false 0 0 true false false 27 false true false false 2721000 2721000 true false false 28 false true false false 2721000 2721000 true false false 29 false false false false 0 0 true false false 30 false true false false 202447000 202447000 true false false 31 false true false false 1674339000 1674339000 true false false 32 false true false false 1674339000 1674339000 true false false 33 false false false false 0 0 true false false 34 false true false false 1364377000 1364377000 true false false 35 false true false false -2268532000 -2268532000 true false false 36 false false false false 0 0 true false false 37 false true false false -2268532000 -2268532000 true false false 38 false false false false 0 0 true false false 39 false true false false -2200836000 -2200836000 true false false xbrli:monetaryItemType monetary The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 2 -Article 4 false 11 6 us-gaap_OtherAssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 130580000 130580000 true false false 2 false true false false 130580000 130580000 true false false 3 false false false false 0 0 true false false 4 false true false false 99206000 99206000 true false false 5 false false false false 0 0 true false false 6 false true false false 3555000 3555000 true false false 7 false false false false 0 0 true false false 8 false true false false 3555000 3555000 true false false 9 false false false false 0 0 true false false 10 false true false false 109000 109000 true false false 11 false true false false 22838000 22838000 true false false 12 false false false false 0 0 true false false 13 false true false false 22838000 22838000 true false false 14 false false false false 0 0 true false false 15 false true false false 13221000 13221000 true false false 16 false true false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false false false false 0 0 true false false 20 false true false false 0 0 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 6153000 6153000 true false false 28 false true false false 6153000 6153000 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 208269000 208269000 true false false 32 false true false false 208269000 208269000 true false false 33 false false false false 0 0 true false false 34 false true false false 175711000 175711000 true false false 35 false true false false -110235000 -110235000 true false false 36 false false false false 0 0 true false false 37 false true false false -110235000 -110235000 true false false 38 false false false false 0 0 true false false 39 false true false false -89835000 -89835000 true false false xbrli:monetaryItemType monetary Aggregate carrying amount, as of the balance sheet date, of current assets not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 8 -Article 5 true 12 6 us-gaap_AssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 1986409000 1986409000 true false false 2 false true false false 1986409000 1986409000 true false false 3 false false false false 0 0 true false false 4 false true false false 1663889000 1663889000 true false false 5 false false false false 0 0 true false false 6 false true false false 5257000 5257000 true false false 7 false false false false 0 0 true false false 8 false true false false 5257000 5257000 true false false 9 false false false false 0 0 true false false 10 false true false false 112000 112000 true false false 11 false true false false 27507000 27507000 true false false 12 false false false false 0 0 true false false 13 false true false false 27507000 27507000 true false false 14 false false false false 0 0 true false false 15 false true false false 20998000 20998000 true false false 16 false true false false 653601000 653601000 true false false 17 false false false false 0 0 true false false 18 false true false false 653601000 653601000 true false false 19 false false false false 0 0 true false false 20 false true false false 573339000 573339000 true false false 21 false true false false 246889000 246889000 true false false 22 false false false false 0 0 true false false 23 false true false false 246889000 246889000 true false false 24 false false false false 0 0 true false false 25 false true false false 251677000 251677000 true false false 26 false false false false 0 0 true false false 27 false true false false 8874000 8874000 true false false 28 false true false false 8874000 8874000 true false false 29 false false false false 0 0 true false false 30 false true false false 202447000 202447000 true false false 31 false true false false 3423048000 3423048000 true false false 32 false true false false 3423048000 3423048000 true false false 33 false false false false 0 0 true false false 34 false true false false 2905987000 2905987000 true false false 35 false true false false -2378767000 -2378767000 true false false 36 false false false false 0 0 true false false 37 false true false false -2378767000 -2378767000 true false false 38 false false false false 0 0 true false false 39 false true false false -2290671000 -2290671000 true false false xbrli:monetaryItemType monetary Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 true 13 5 us-gaap_PropertyPlantAndEquipmentNetAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 14 6 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 9263582000 9263582000 true false false 2 false true false false 9263582000 9263582000 true false false 3 false false false false 0 0 true false false 4 false true false false 8782164000 8782164000 true false false 5 false false false false 0 0 true false false 6 false true false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 0 0 true false false 9 false false false false 0 0 true false false 10 false true false false 0 0 true false false 11 false true false false 1554694000 1554694000 true false false 12 false false false false 0 0 true false false 13 false true false false 1554694000 1554694000 true false false 14 false false false false 0 0 true false false 15 false true false false 1419193000 1419193000 true false false 16 false true false false 70909000 70909000 true false false 17 false false false false 0 0 true false false 18 false true false false 70909000 70909000 true false false 19 false false false false 0 0 true false false 20 false true false false 69601000 69601000 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 7637979000 7637979000 true false false 32 false true false false 7637979000 7637979000 true false false 33 false false false false 0 0 true false false 34 false true false false 7293370000 7293370000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Carrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, construction in progress, and similar items. Amount does not include depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 false 15 6 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap true credit instant No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -2355672000 -2355672000 true false false 2 false true false false -2355672000 -2355672000 true false false 3 false false false false 0 0 true false false 4 false true false false -2175775000 -2175775000 true false false 5 false false false false 0 0 true false false 6 false true false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 0 0 true false false 9 false false false false 0 0 true false false 10 false true false false 0 0 true false false 11 false true false false -136532000 -136532000 true false false 12 false false false false 0 0 true false false 13 false true false false -136532000 -136532000 true false false 14 false false false false 0 0 true false false 15 false true false false -120862000 -120862000 true false false 16 false true false false -48855000 -48855000 true false false 17 false false false false 0 0 true false false 18 false true false false -48855000 -48855000 true false false 19 false false false false 0 0 true false false 20 false true false false -47585000 -47585000 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false -2170285000 -2170285000 true false false 32 false true false false -2170285000 -2170285000 true false false 33 false false false false 0 0 true false false 34 false true false false -2007328000 -2007328000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 true 16 6 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 6907910000 6907910000 true false false 2 false true false false 6907910000 6907910000 true false false 3 false false false false 0 0 true false false 4 false true false false 6606389000 6606389000 true false false 5 false false false false 0 0 true false false 6 false true false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 0 0 true false false 9 false false false false 0 0 true false false 10 false true false false 0 0 true false false 11 false true false false 1418162000 1418162000 true false false 12 false false false false 0 0 true false false 13 false true false false 1418162000 1418162000 true false false 14 false false false false 0 0 true false false 15 false true false false 1298331000 1298331000 true false false 16 false true false false 22054000 22054000 true false false 17 false false false false 0 0 true false false 18 false true false false 22054000 22054000 true false false 19 false false false false 0 0 true false false 20 false true false false 22016000 22016000 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 5467694000 5467694000 true false false 32 false true false false 5467694000 5467694000 true false false 33 false false false false 0 0 true false false 34 false true false false 5286042000 5286042000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 true 17 5 us-gaap_NotesAndLoansReceivableNetNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false 0 0 true false false 5 false false false false 0 0 true false false 6 false true false false 3507062000 3507062000 true false false 7 false false false false 0 0 true false false 8 false true false false 3507062000 3507062000 true false false 9 false false false false 0 0 true false false 10 false true false false 3507062000 3507062000 true false false 11 false true false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 0 0 true false false 14 false false false false 0 0 true false false 15 false true false false 0 0 true false false 16 false true false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false false false false 0 0 true false false 20 false true false false 0 0 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 479107000 479107000 true false false 28 false true false false 479107000 479107000 true false false 29 false false false false 0 0 true false false 30 false true false false 479107000 479107000 true false false 31 false true false false 1904821000 1904821000 true false false 32 false true false false 1904821000 1904821000 true false false 33 false false false false 0 0 true false false 34 false true false false 1964821000 1964821000 true false false 35 false true false false -5890990000 -5890990000 true false false 36 false false false false 0 0 true false false 37 false true false false -5890990000 -5890990000 true false false 38 false false false false 0 0 true false false 39 false true false false -5950990000 -5950990000 true false false xbrli:monetaryItemType monetary An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 false 18 5 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false 0 0 true false false 5 false false false false 0 0 true false false 6 false true false false 4866873000 4866873000 true false false 7 false false false false 0 0 true false false 8 false true false false 4866873000 4866873000 true false false 9 false false false false 0 0 true false false 10 false true false false 4258135000 4258135000 true false false 11 false true false false 8765205000 8765205000 true false false 12 false false false false 0 0 true false false 13 false true false false 8765205000 8765205000 true false false 14 false false false false 0 0 true false false 15 false true false false 8423518000 8423518000 true false false 16 false true false false 3632735000 3632735000 true false false 17 false false false false 0 0 true false false 18 false true false false 3632735000 3632735000 true false false 19 false false false false 0 0 true false false 20 false true false false 3709623000 3709623000 true false false 21 false true false false 5210229000 5210229000 true false false 22 false false false false 0 0 true false false 23 false true false false 5210229000 5210229000 true false false 24 false false false false 0 0 true false false 25 false true false false 4578138000 4578138000 true false false 26 false false false false 0 0 true false false 27 false true false false 1724229000 1724229000 true false false 28 false true false false 1724229000 1724229000 true false false 29 false false false false 0 0 true false false 30 false true false false 1403805000 1403805000 true false false 31 false true false false 0 0 true false false 32 false true false false 0 0 true false false 33 false false false false 0 0 true false false 34 false true false false 0 0 true false false 35 false true false false -24199271000 -24199271000 true false false 36 false false false false 0 0 true false false 37 false true false false -24199271000 -24199271000 true false false 38 false false false false 0 0 true false false 39 false true false false -22373219000 -22373219000 true false false xbrli:monetaryItemType monetary Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable form a party that is affiliated with the reporting entity by means of direct or indirect ownership. No authoritative reference available. false 19 5 us-gaap_OtherAssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 281032000 281032000 true false false 2 false true false false 281032000 281032000 true false false 3 false false false false 0 0 true false false 4 false true false false 279139000 279139000 true false false 5 false false false false 0 0 true false false 6 false true false false 2305000 2305000 true false false 7 false false false false 0 0 true false false 8 false true false false 2305000 2305000 true false false 9 false false false false 0 0 true false false 10 false true false false 2735000 2735000 true false false 11 false true false false 9038000 9038000 true false false 12 false false false false 0 0 true false false 13 false true false false 9038000 9038000 true false false 14 false false false false 0 0 true false false 15 false true false false 8227000 8227000 true false false 16 false true false false 2371000 2371000 true false false 17 false false false false 0 0 true false false 18 false true false false 2371000 2371000 true false false 19 false false false false 0 0 true false false 20 false true false false 772000 772000 true false false 21 false true false false 6020000 6020000 true false false 22 false false false false 0 0 true false false 23 false true false false 6020000 6020000 true false false 24 false false false false 0 0 true false false 25 false true false false 1744000 1744000 true false false 26 false false false false 0 0 true false false 27 false true false false 1061000 1061000 true false false 28 false true false false 1061000 1061000 true false false 29 false false false false 0 0 true false false 30 false true false false 1122000 1122000 true false false 31 false true false false 260237000 260237000 true false false 32 false true false false 260237000 260237000 true false false 33 false false false false 0 0 true false false 34 false true false false 264539000 264539000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet due to materiality considerations. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 true 20 5 us-gaap_Assets us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 9175351000 9175351000 true false false 2 false true false false 9175351000 9175351000 true false false 3 false false false false 0 0 true false false 4 false true false false 8549417000 8549417000 true false false 5 false false false false 0 0 true false false 6 false true false false 8381497000 8381497000 true false false 7 false false false false 0 0 true false false 8 false true false false 8381497000 8381497000 true false false 9 false false false false 0 0 true false false 10 false true false false 7768044000 7768044000 true false false 11 false true false false 10219912000 10219912000 true false false 12 false false false false 0 0 true false false 13 false true false false 10219912000 10219912000 true false false 14 false false false false 0 0 true false false 15 false true false false 9751074000 9751074000 true false false 16 false true false false 4310761000 4310761000 true false false 17 false false false false 0 0 true false false 18 false true false false 4310761000 4310761000 true false false 19 false false false false 0 0 true false false 20 false true false false 4305750000 4305750000 true false false 21 false true false false 5463138000 5463138000 true false false 22 false false false false 0 0 true false false 23 false true false false 5463138000 5463138000 true false false 24 false false false false 0 0 true false false 25 false true false false 4831559000 4831559000 true false false 26 false false false false 0 0 true false false 27 false true false false 2213271000 2213271000 true false false 28 false true false false 2213271000 2213271000 true false false 29 false false false false 0 0 true false false 30 false true false false 2086481000 2086481000 true false false 31 false true false false 11055800000 11055800000 true false false 32 false true false false 11055800000 11055800000 true false false 33 false false false false 0 0 true false false 34 false true false false 10421389000 10421389000 true false false 35 false true false false -32469028000 -32469028000 true false false 36 false false false false 0 0 true false false 37 false true false false -32469028000 -32469028000 true false false 38 false false false false 0 0 true false false 39 false true false false -30614880000 -30614880000 true false false xbrli:monetaryItemType monetary Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 true 22 5 us-gaap_LiabilitiesCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 23 6 us-gaap_LongTermDebtCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false 0 0 true false false 5 false false false false 0 0 true false false 6 false true false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 0 0 true false false 9 false false false false 0 0 true false false 10 false true false false 0 0 true false false 11 false true false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 0 0 true false false 14 false false false false 0 0 true false false 15 false true false false 0 0 true false false 16 false true false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false false false false 0 0 true false false 20 false true false false 0 0 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 0 0 true false false 32 false true false false 0 0 true false false 33 false false false false 0 0 true false false 34 false true false false 0 0 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 false 24 6 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 424384000 424384000 true false false 2 false true false false 424384000 424384000 true false false 3 false false false false 0 0 true false false 4 false true false false 425907000 425907000 true false false 5 false false false false 0 0 true false false 6 false true false false 6626000 6626000 true false false 7 false false false false 0 0 true false false 8 false true false false 6626000 6626000 true false false 9 false false false false 0 0 true false false 10 false true false false 6625000 6625000 true false false 11 false true false false 50787000 50787000 true false false 12 false false false false 0 0 true false false 13 false true false false 50787000 50787000 true false false 14 false false false false 0 0 true false false 15 false true false false 47631000 47631000 true false false 16 false true false false 35217000 35217000 true false false 17 false false false false 0 0 true false false 18 false true false false 35217000 35217000 true false false 19 false false false false 0 0 true false false 20 false true false false 31787000 31787000 true false false 21 false true false false 49884000 49884000 true false false 22 false false false false 0 0 true false false 23 false true false false 49884000 49884000 true false false 24 false false false false 0 0 true false false 25 false true false false 30524000 30524000 true false false 26 false false false false 0 0 true false false 27 false true false false 4412000 4412000 true false false 28 false true false false 4412000 4412000 true false false 29 false false false false 0 0 true false false 30 false true false false 4412000 4412000 true false false 31 false true false false 387693000 387693000 true false false 32 false true false false 387693000 387693000 true false false 33 false false false false 0 0 true false false 34 false true false false 394763000 394763000 true false false 35 false true false false -110235000 -110235000 true false false 36 false false false false 0 0 true false false 37 false true false false -110235000 -110235000 true false false 38 false false false false 0 0 true false false 39 false true false false -89835000 -89835000 true false false xbrli:monetaryItemType monetary Accounts Payable and Accrued Liabilities, Current Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20 -Article 5 false 25 6 ne_AccountsPayableToAffiliates ne false credit instant Accounts payable to affiliates. false false false false false false false false false false false totallabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false 0 0 true false false 5 false false false false 0 0 true false false 6 false true false false 372485000 372485000 true false false 7 false false false false 0 0 true false false 8 false true false false 372485000 372485000 true false false 9 false false false false 0 0 true false false 10 false true false false 362520000 362520000 true false false 11 false true false false 1890075000 1890075000 true false false 12 false false false false 0 0 true false false 13 false true false false 1890075000 1890075000 true false false 14 false false false false 0 0 true false false 15 false true false false 1636236000 1636236000 true false false 16 false true false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false false false false 0 0 true false false 20 false true false false 1843000 1843000 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 451000 451000 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 199786000 199786000 true false false 31 false true false false 5972000 5972000 true false false 32 false true false false 5972000 5972000 true false false 33 false false false false 0 0 true false false 34 false true false false 0 0 true false false 35 false true false false -2268532000 -2268532000 true false false 36 false false false false 0 0 true false false 37 false true false false -2268532000 -2268532000 true false false 38 false false false false 0 0 true false false 39 false true false false -2200836000 -2200836000 true false false xbrli:monetaryItemType monetary Accounts payable to affiliates. No authoritative reference available. true 26 6 us-gaap_LiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 424384000 424384000 true false false 2 false true false false 424384000 424384000 true false false 3 false false false false 0 0 true false false 4 false true false false 425907000 425907000 true false false 5 false false false false 0 0 true false false 6 false true false false 379111000 379111000 true false false 7 false false false false 0 0 true false false 8 false true false false 379111000 379111000 true false false 9 false false false false 0 0 true false false 10 false true false false 369145000 369145000 true false false 11 false true false false 1940862000 1940862000 true false false 12 false false false false 0 0 true false false 13 false true false false 1940862000 1940862000 true false false 14 false false false false 0 0 true false false 15 false true false false 1683867000 1683867000 true false false 16 false true false false 35217000 35217000 true false false 17 false false false false 0 0 true false false 18 false true false false 35217000 35217000 true false false 19 false false false false 0 0 true false false 20 false true false false 33630000 33630000 true false false 21 false true false false 49884000 49884000 true false false 22 false false false false 0 0 true false false 23 false true false false 49884000 49884000 true false false 24 false false false false 0 0 true false false 25 false true false false 30975000 30975000 true false false 26 false false false false 0 0 true false false 27 false true false false 4412000 4412000 true false false 28 false true false false 4412000 4412000 true false false 29 false false false false 0 0 true false false 30 false true false false 204198000 204198000 true false false 31 false true false false 393665000 393665000 true false false 32 false true false false 393665000 393665000 true false false 33 false false false false 0 0 true false false 34 false true false false 394763000 394763000 true false false 35 false true false false -2378767000 -2378767000 true false false 36 false false false false 0 0 true false false 37 false true false false -2378767000 -2378767000 true false false 38 false false false false 0 0 true false false 39 false true false false -2290671000 -2290671000 true false false xbrli:monetaryItemType monetary Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 21 -Article 5 true 27 5 us-gaap_LongTermDebtNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 751028000 751028000 true false false 2 false true false false 751028000 751028000 true false false 3 false false false false 0 0 true false false 4 false true false false 750946000 750946000 true false false 5 false false false false 0 0 true false false 6 false true false false 299893000 299893000 true false false 7 false false false false 0 0 true false false 8 false true false false 299893000 299893000 true false false 9 false false false false 0 0 true false false 10 false true false false 299874000 299874000 true false false 11 false true false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 0 0 true false false 14 false false false false 0 0 true false false 15 false true false false 0 0 true false false 16 false true false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false false false false 0 0 true false false 20 false true false false 0 0 true false false 21 false true false false 249440000 249440000 true false false 22 false false false false 0 0 true false false 23 false true false false 249440000 249440000 true false false 24 false false false false 0 0 true false false 25 false true false false 249377000 249377000 true false false 26 false false false false 0 0 true false false 27 false true false false 201695000 201695000 true false false 28 false true false false 201695000 201695000 true false false 29 false false false false 0 0 true false false 30 false true false false 201695000 201695000 true false false 31 false true false false 0 0 true false false 32 false true false false 0 0 true false false 33 false false false false 0 0 true false false 34 false true false false 0 0 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 28 5 us-gaap_LongTermNotesPayable us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false 0 0 true false false 5 false false false false 0 0 true false false 6 false true false false 129900000 129900000 true false false 7 false false false false 0 0 true false false 8 false true false false 129900000 129900000 true false false 9 false false false false 0 0 true false false 10 false true false false 129900000 129900000 true false false 11 false true false false 1104921000 1104921000 true false false 12 false false false false 0 0 true false false 13 false true false false 1104921000 1104921000 true false false 14 false false false false 0 0 true false false 15 false true false false 1164921000 1164921000 true false false 16 false true false false 120000000 120000000 true false false 17 false false false false 0 0 true false false 18 false true false false 120000000 120000000 true false false 19 false false false false 0 0 true false false 20 false true false false 120000000 120000000 true false false 21 false true false false 550000000 550000000 true false false 22 false false false false 0 0 true false false 23 false true false false 550000000 550000000 true false false 24 false false false false 0 0 true false false 25 false true false false 550000000 550000000 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 3986169000 3986169000 true false false 32 false true false false 3986169000 3986169000 true false false 33 false false false false 0 0 true false false 34 false true false false 3986169000 3986169000 true false false 35 false true false false -5890990000 -5890990000 true false false 36 false false false false 0 0 true false false 37 false true false false -5890990000 -5890990000 true false false 38 false false false false 0 0 true false false 39 false true false false -5950990000 -5950990000 true false false xbrli:monetaryItemType monetary Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 29 5 ne_DeferredTaxLiabilitiesNoncurrentAndOtherLiabilities ne false credit instant Deferred Tax Liabilities Noncurrent And Other Liabilities false false false false false false false false false false false totallabel false 1 false true false false 447275000 447275000 true false false 2 false true false false 447275000 447275000 true false false 3 false false false false 0 0 true false false 4 false true false false 423368000 423368000 true false false 5 false false false false 0 0 true false false 6 false true false false 19929000 19929000 true false false 7 false false false false 0 0 true false false 8 false true false false 19929000 19929000 true false false 9 false false false false 0 0 true false false 10 false true false false 19929000 19929000 true false false 11 false true false false 52083000 52083000 true false false 12 false false false false 0 0 true false false 13 false true false false 52083000 52083000 true false false 14 false false false false 0 0 true false false 15 false true false false 41501000 41501000 true false false 16 false true false false 25174000 25174000 true false false 17 false false false false 0 0 true false false 18 false true false false 25174000 25174000 true false false 19 false false false false 0 0 true false false 20 false true false false 23883000 23883000 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 350089000 350089000 true false false 32 false true false false 350089000 350089000 true false false 33 false false false false 0 0 true false false 34 false true false false 338055000 338055000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Deferred Tax Liabilities Noncurrent And Other Liabilities No authoritative reference available. true 30 5 us-gaap_Liabilities us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 1622687000 1622687000 true false false 2 false true false false 1622687000 1622687000 true false false 3 false false false false 0 0 true false false 4 false true false false 1600221000 1600221000 true false false 5 false false false false 0 0 true false false 6 false true false false 828833000 828833000 true false false 7 false false false false 0 0 true false false 8 false true false false 828833000 828833000 true false false 9 false false false false 0 0 true false false 10 false true false false 818848000 818848000 true false false 11 false true false false 3097866000 3097866000 true false false 12 false false false false 0 0 true false false 13 false true false false 3097866000 3097866000 true false false 14 false false false false 0 0 true false false 15 false true false false 2890289000 2890289000 true false false 16 false true false false 180391000 180391000 true false false 17 false false false false 0 0 true false false 18 false true false false 180391000 180391000 true false false 19 false false false false 0 0 true false false 20 false true false false 177513000 177513000 true false false 21 false true false false 849324000 849324000 true false false 22 false false false false 0 0 true false false 23 false true false false 849324000 849324000 true false false 24 false false false false 0 0 true false false 25 false true false false 830352000 830352000 true false false 26 false false false false 0 0 true false false 27 false true false false 206107000 206107000 true false false 28 false true false false 206107000 206107000 true false false 29 false false false false 0 0 true false false 30 false true false false 405893000 405893000 true false false 31 false true false false 4729923000 4729923000 true false false 32 false true false false 4729923000 4729923000 true false false 33 false false false false 0 0 true false false 34 false true false false 4718987000 4718987000 true false false 35 false true false false -8269757000 -8269757000 true false false 36 false false false false 0 0 true false false 37 false true false false -8269757000 -8269757000 true false false 38 false false false false 0 0 true false false 39 false true false false -8241661000 -8241661000 true false false xbrli:monetaryItemType monetary Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. No authoritative reference available. true 31 5 us-gaap_CommitmentsAndContingencies2009 us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0     true 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 10 false false false false 0 0     true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0     true false false 14 false false false false 0 0 true false false 15 false false false false 0 0     true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0     true false false 19 false false false false 0 0 true false false 20 false false false false 0 0     true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0     true false false 24 false false false false 0 0 true false false 25 false false false false 0 0     true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0     true false false 29 false false false false 0 0 true false false 30 false false false false 0 0     true false false 31 false false false false 0 0 true false false 32 false false false false 0 0     true false false 33 false false false false 0 0 true false false 34 false false false false 0 0     true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0     true false false 38 false false false false 0 0 true false false 39 false false false false 0 0     true false false xbrli:stringItemType string Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. This caption alerts the reader that one or more notes to the financial statements disclose pertinent information about the entity's commitments and contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 false 32 5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 7552664000 7552664000 true false false 2 false true false false 7552664000 7552664000 true false false 3 false false false false 0 0 true false false 4 false true false false 6949196000 6949196000 true false false 5 false false false false 0 0 true false false 6 false true false false 7552664000 7552664000 true false false 7 false false false false 0 0 true false false 8 false true false false 7552664000 7552664000 true false false 9 false false false false 0 0 true false false 10 false true false false 6949196000 6949196000 true false false 11 false true false false 7122046000 7122046000 true false false 12 false false false false 0 0 true false false 13 false true false false 7122046000 7122046000 true false false 14 false false false false 0 0 true false false 15 false true false false 6860785000 6860785000 true false false 16 false true false false 4130370000 4130370000 true false false 17 false false false false 0 0 true false false 18 false true false false 4130370000 4130370000 true false false 19 false false false false 0 0 true false false 20 false true false false 4128237000 4128237000 true false false 21 false true false false 4613814000 4613814000 true false false 22 false false false false 0 0 true false false 23 false true false false 4613814000 4613814000 true false false 24 false false false false 0 0 true false false 25 false true false false 4001207000 4001207000 true false false 26 false false false false 0 0 true false false 27 false true false false 2007164000 2007164000 true false false 28 false true false false 2007164000 2007164000 true false false 29 false false false false 0 0 true false false 30 false true false false 1680588000 1680588000 true false false 31 false true false false 6325877000 6325877000 true false false 32 false true false false 6325877000 6325877000 true false false 33 false false false false 0 0 true false false 34 false true false false 5702402000 5702402000 true false false 35 false true false false -24199271000 -24199271000 true false false 36 false false false false 0 0 true false false 37 false true false false -24199271000 -24199271000 true false false 38 false false false false 0 0 true false false 39 false true false false -22373219000 -22373219000 true false false xbrli:monetaryItemType monetary Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A true 33 5 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 9175351000 9175351000 true false false 2 false true false false 9175351000 9175351000 true false false 3 false false false false 0 0 true false false 4 false true false false 8549417000 8549417000 true false false 5 false false false false 0 0 true false false 6 false true false false 8381497000 8381497000 true false false 7 false false false false 0 0 true false false 8 false true false false 8381497000 8381497000 true false false 9 false false false false 0 0 true false false 10 false true false false 7768044000 7768044000 true false false 11 false true false false 10219912000 10219912000 true false false 12 false false false false 0 0 true false false 13 false true false false 10219912000 10219912000 true false false 14 false false false false 0 0 true false false 15 false true false false 9751074000 9751074000 true false false 16 false true false false 4310761000 4310761000 true false false 17 false false false false 0 0 true false false 18 false true false false 4310761000 4310761000 true false false 19 false false false false 0 0 true false false 20 false true false false 4305750000 4305750000 true false false 21 false true false false 5463138000 5463138000 true false false 22 false false false false 0 0 true false false 23 false true false false 5463138000 5463138000 true false false 24 false false false false 0 0 true false false 25 false true false false 4831559000 4831559000 true false false 26 false false false false 0 0 true false false 27 false true false false 2213271000 2213271000 true false false 28 false true false false 2213271000 2213271000 true false false 29 false false false false 0 0 true false false 30 false true false false 2086481000 2086481000 true false false 31 false true false false 11055800000 11055800000 true false false 32 false true false false 11055800000 11055800000 true false false 33 false false false false 0 0 true false false 34 false true false false 10421389000 10421389000 true false false 35 false true false false -32469028000 -32469028000 true false false 36 false false false false 0 0 true false false 37 false true false false -32469028000 -32469028000 true false false 38 false false false false 0 0 true false false 39 false true false false -30614880000 -30614880000 true false false xbrli:monetaryItemType monetary Total of all Liabilities and Stockholders' Equity items. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 true 35 4 us-gaap_RevenuesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 36 5 us-gaap_RevenueOilAndGasServices us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 687510000 687510000 true false false 2 false true false false 1496156000 1496156000 true false false 3 false true false false 1740602000 1740602000 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 10 false false false false 0 0 true false false 11 false true false false 20280000 20280000 true false false 12 false true false false 34947000 34947000 true false false 13 false true false false 48589000 48589000 true false false 14 false true false false 84222000 84222000 true false false 15 false false false false 0 0 true false false 16 false true false false 5016000 5016000 true false false 17 false true false false 18167000 18167000 true false false 18 false true false false 7484000 7484000 true false false 19 false true false false 25867000 25867000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 670214000 670214000 true false false 32 false true false false 1461383000 1461383000 true false false 33 false true false false 1666474000 1666474000 true false false 34 false false false false 0 0 true false false 35 false true false false -8000000 -8000000 true false false 36 false true false false -19961000 -19961000 true false false 37 false true false false -21300000 -21300000 true false false 38 false true false false -35961000 -35961000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Revenue from oil and gas-related services including well services (such as drilling, rigs and analytic evaluations), transportation, and other supporting contractor services, during the reporting period. No authoritative reference available. false 37 5 us-gaap_ReimbursementRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 13753000 13753000 true false false 2 false true false false 37986000 37986000 true false false 3 false true false false 39512000 39512000 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 10 false false false false 0 0 true false false 11 false true false false 340000 340000 true false false 12 false true false false 583000 583000 true false false 13 false true false false 590000 590000 true false false 14 false true false false 1050000 1050000 true false false 15 false false false false 0 0 true false false 16 false true false false 61000 61000 true false false 17 false false false false 0 0 true false false 18 false true false false 61000 61000 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 13352000 13352000 true false false 32 false true false false 37335000 37335000 true false false 33 false true false false 38462000 38462000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Repayment received for expenses incurred on behalf of the client or customer, other than those reimbursements received by landlords from tenants. No authoritative reference available. false 38 5 us-gaap_ContractsRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 8056000 8056000 true false false 2 false true false false 15817000 15817000 true false false 3 false true false false 14353000 14353000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 8056000 8056000 true false false 32 false true false false 15817000 15817000 true false false 33 false true false false 14353000 14353000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Revenue earned during the period arising from products sold or services provided under the terms of a contract, not elsewhere specified in the taxonomy. May include government contracts, construction contracts, and any other contract related to a particular project or product. No authoritative reference available. false 39 5 us-gaap_TechnologyServicesRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 603000 603000 true false false 2 false true false false 814000 814000 true false false 3 false true false false 556000 556000 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 10 false false false false 0 0 true false false 11 false true false false 112000 112000 true false false 12 false false false false 0 0 true false false 13 false true false false 112000 112000 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false true false false -1862000 -1862000 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 491000 491000 true false false 32 false true false false 702000 702000 true false false 33 false true false false 556000 556000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Revenue from providing technology services. The services may include training, installation, engineering or consulting. Consulting services often include implementation support, software design or development, or the customization or modification of the licensed software. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 97-2 -Paragraph 63 true 40 5 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 709922000 709922000 true false false 2 false true false false 1550773000 1550773000 true false false 3 false true false false 1795023000 1795023000 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 10 false false false false 0 0 true false false 11 false true false false 20732000 20732000 true false false 12 false true false false 35530000 35530000 true false false 13 false true false false 49291000 49291000 true false false 14 false true false false 85272000 85272000 true false false 15 false false false false 0 0 true false false 16 false true false false 5077000 5077000 true false false 17 false true false false 16305000 16305000 true false false 18 false true false false 7545000 7545000 true false false 19 false true false false 25867000 25867000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 692113000 692113000 true false false 32 false true false false 1515237000 1515237000 true false false 33 false true false false 1719845000 1719845000 true false false 34 false false false false 0 0 true false false 35 false true false false -8000000 -8000000 true false false 36 false true false false -19961000 -19961000 true false false 37 false true false false -21300000 -21300000 true false false 38 false true false false -35961000 -35961000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true 41 4 us-gaap_OperatingCostsAndExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 42 5 ne_ContractDrillingServicesCost ne false debit duration Contract drilling services, cost false false false false false false false false false false false verboselabel false 1 false true false false 271084000 271084000 true false false 2 false true false false 523865000 523865000 true false false 3 false true false false 491910000 491910000 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 true false false 2000 2000 true false false 7 false true false false 5517000 5517000 true false false 8 false true false false 7000 7000 true false false 9 false true false false 10518000 10518000 true false false 10 false false false false 0 0 true false false 11 false true false false 10726000 10726000 true false false 12 false true false false 17336000 17336000 true false false 13 false true false false 18607000 18607000 true false false 14 false true false false 27597000 27597000 true false false 15 false false false false 0 0 true false false 16 false true false false 1188000 1188000 true false false 17 false true false false 1860000 1860000 true false false 18 false true false false 3136000 3136000 true false false 19 false true false false 3648000 3648000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false true false false 17000 17000 true false false 23 false false false false 0 0 true false false 24 false true false false 26000 26000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 267168000 267168000 true false false 32 false true false false 523415000 523415000 true false false 33 false true false false 486082000 486082000 true false false 34 false false false false 0 0 true false false 35 false true false false -8000000 -8000000 true false false 36 false true false false -19961000 -19961000 true false false 37 false true false false -21300000 -21300000 true false false 38 false true false false -35961000 -35961000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Contract drilling services, cost No authoritative reference available. false 43 5 us-gaap_CostOfReimbursableExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 10365000 10365000 true false false 2 false true false false 30108000 30108000 true false false 3 false true false false 33364000 33364000 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 10 false false false false 0 0 true false false 11 false true false false 988000 988000 true false false 12 false true false false 352000 352000 true false false 13 false true false false 1099000 1099000 true false false 14 false true false false 731000 731000 true false false 15 false false false false 0 0 true false false 16 false true false false 61000 61000 true false false 17 false false false false 0 0 true false false 18 false true false false 61000 61000 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 9316000 9316000 true false false 32 false true false false 28948000 28948000 true false false 33 false true false false 32633000 32633000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Cost associated with reimbursable income. This occurs when a services entity incurs expenses on behalf of the client and passes through the cost of reimbursable expenses to a client. No authoritative reference available. false 44 5 us-gaap_ContractRevenueCost us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 5380000 5380000 true false false 2 false true false false 11268000 11268000 true false false 3 false true false false 9257000 9257000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 5380000 5380000 true false false 32 false true false false 11268000 11268000 true false false 33 false true false false 9257000 9257000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Costs incurred and are directly related to generating contract revenues. No authoritative reference available. false 45 5 us-gaap_CostOfServicesDepreciationAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 126052000 126052000 true false false 2 false true false false 241716000 241716000 true false false 3 false true false false 192401000 192401000 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 10 false false false false 0 0 true false false 11 false true false false 9044000 9044000 true false false 12 false true false false 7868000 7868000 true false false 13 false true false false 17827000 17827000 true false false 14 false true false false 16488000 16488000 true false false 15 false false false false 0 0 true false false 16 false true false false 874000 874000 true false false 17 false true false false 2664000 2664000 true false false 18 false true false false 1612000 1612000 true false false 19 false true false false 4712000 4712000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 116134000 116134000 true false false 32 false true false false 222277000 222277000 true false false 33 false true false false 171201000 171201000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Depreciation of property, plant and equipment directly related to services rendered by an entity during the reporting period. No authoritative reference available. false 46 5 us-gaap_SellingGeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 15534000 15534000 true false false 2 false true false false 31422000 31422000 true false false 3 false true false false 38278000 38278000 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 3095000 3095000 true false false 8 false false false false 0 0 true false false 9 false true false false 6229000 6229000 true false false 10 false false false false 0 0 true false false 11 false true false false 49773000 49773000 true false false 12 false true false false 1689000 1689000 true false false 13 false true false false 50636000 50636000 true false false 14 false true false false 3021000 3021000 true false false 15 false false false false 0 0 true false false 16 false true false false 88000 88000 true false false 17 false true false false 506000 506000 true false false 18 false true false false 221000 221000 true false false 19 false true false false 861000 861000 true false false 20 false false false false 0 0 true false false 21 false true false false 76000 76000 true false false 22 false false false false 0 0 true false false 23 false true false false 119000 119000 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false -34403000 -34403000 true false false 32 false true false false -19554000 -19554000 true false false 33 false true false false 28167000 28167000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 4 -Paragraph 5A true 47 5 ne_GainLossOnAssetDisposalInvoluntaryConversionNet ne false debit duration (Gain)/ loss on asset disposal/involuntary conversion, net. false false false false false false false false false false false totallabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false 28977000 28977000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false true false false 28977000 28977000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary (Gain)/ loss on asset disposal/involuntary conversion, net. No authoritative reference available. true 48 5 us-gaap_CostsAndExpenses us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 428415000 428415000 true false false 2 false true false false 838379000 838379000 true false false 3 false true false false 794187000 794187000 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 true false false 2000 2000 true false false 7 false true false false 8612000 8612000 true false false 8 false true false false 7000 7000 true false false 9 false true false false 16747000 16747000 true false false 10 false false false false 0 0 true false false 11 false true false false 70531000 70531000 true false false 12 false true false false 27245000 27245000 true false false 13 false true false false 88169000 88169000 true false false 14 false true false false 47837000 47837000 true false false 15 false false false false 0 0 true false false 16 false true false false 2211000 2211000 true false false 17 false true false false 5030000 5030000 true false false 18 false true false false 5030000 5030000 true false false 19 false true false false 9221000 9221000 true false false 20 false false false false 0 0 true false false 21 false true false false 76000 76000 true false false 22 false true false false 17000 17000 true false false 23 false true false false 119000 119000 true false false 24 false true false false 26000 26000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 363595000 363595000 true false false 32 false true false false 766354000 766354000 true false false 33 false true false false 756317000 756317000 true false false 34 false false false false 0 0 true false false 35 false true false false -8000000 -8000000 true false false 36 false true false false -19961000 -19961000 true false false 37 false true false false -21300000 -21300000 true false false 38 false true false false -35961000 -35961000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Total costs of sales and operating expenses for the period. No authoritative reference available. true 49 4 us-gaap_OperatingIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false label false 1 false true false false 281507000 281507000 true false false 2 false true false false 712394000 712394000 true false false 3 false true false false 1000836000 1000836000 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 true false false -2000 -2000 true false false 7 false true false false -8612000 -8612000 true false false 8 false true false false -7000 -7000 true false false 9 false true false false -16747000 -16747000 true false false 10 false false false false 0 0 true false false 11 false true false false -49799000 -49799000 true false false 12 false true false false 8285000 8285000 true false false 13 false true false false -38878000 -38878000 true false false 14 false true false false 37435000 37435000 true false false 15 false false false false 0 0 true false false 16 false true false false 2866000 2866000 true false false 17 false true false false 11275000 11275000 true false false 18 false true false false 2515000 2515000 true false false 19 false true false false 16646000 16646000 true false false 20 false false false false 0 0 true false false 21 false true false false -76000 -76000 true false false 22 false true false false -17000 -17000 true false false 23 false true false false -119000 -119000 true false false 24 false true false false -26000 -26000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 328518000 328518000 true false false 32 false true false false 748883000 748883000 true false false 33 false true false false 963528000 963528000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net result for the period of deducting operating expenses from operating revenues. No authoritative reference available. false 50 4 us-gaap_NonoperatingIncomeExpenseAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 51 5 us-gaap_IncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 true false false 231400000 231400000 true false false 7 false true false false 401945000 401945000 true false false 8 false true false false 608738000 608738000 true false false 9 false true false false 826882000 826882000 true false false 10 false false false false 0 0 true false false 11 false true false false 166662000 166662000 true false false 12 false true false false 419978000 419978000 true false false 13 false true false false 341687000 341687000 true false false 14 false true false false 839781000 839781000 true false false 15 false false false false 0 0 true false false 16 false true false false 9556000 9556000 true false false 17 false true false false 177806000 177806000 true false false 18 false true false false 9118000 9118000 true false false 19 false true false false 279236000 279236000 true false false 20 false false false false 0 0 true false false 21 false true false false 242210000 242210000 true false false 22 false true false false 232545000 232545000 true false false 23 false true false false 632091000 632091000 true false false 24 false true false false 504604000 504604000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 123117000 123117000 true false false 28 false true false false 300508000 300508000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false true false false -772945000 -772945000 true false false 36 false true false false -1232274000 -1232274000 true false false 37 false true false false -1892142000 -1892142000 true false false 38 false true false false -2450503000 -2450503000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 6 -Subparagraph b false 52 5 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -510000 -510000 true false false 2 false true false false -975000 -975000 true false false 3 false true false false -882000 -882000 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 true false false -174000 -174000 true false false 7 false true false false -653000 -653000 true false false 8 false true false false -587000 -587000 true false false 9 false true false false -4652000 -4652000 true false false 10 false false false false 0 0 true false false 11 false true false false -20453000 -20453000 true false false 12 false true false false -16175000 -16175000 true false false 13 false true false false -35334000 -35334000 true false false 14 false true false false -32301000 -32301000 true false false 15 false false false false 0 0 true false false 16 false true false false -1839000 -1839000 true false false 17 false true false false -3781000 -3781000 true false false 18 false true false false -3657000 -3657000 true false false 19 false true false false -7542000 -7542000 true false false 20 false false false false 0 0 true false false 21 false true false false -9736000 -9736000 true false false 22 false true false false -5456000 -5456000 true false false 23 false true false false -19365000 -19365000 true false false 24 false true false false -5456000 -5456000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false -2739000 -2739000 true false false 32 false true false false -6184000 -6184000 true false false 33 false true false false 3341000 3341000 true false false 34 false false false false 0 0 true false false 35 false true false false 34431000 34431000 true false false 36 false true false false 24021000 24021000 true false false 37 false true false false 64152000 64152000 true false false 38 false true false false 45728000 45728000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 false 53 5 ne_InterestIncomeAndOther ne false debit duration Interest income and other, net false false false false false false false false false false true negatedtotal false 1 false true false false 1503000 1503000 true false false 2 false true false false 5110000 5110000 true false false 3 false true false false 2390000 2390000 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 true false false 1733000 1733000 true false false 7 false false false false 0 0 true false false 8 false true false false 3446000 3446000 true false false 9 false true false false 1201000 1201000 true false false 10 false false false false 0 0 true false false 11 false true false false 20941000 20941000 true false false 12 false false false false 0 0 true false false 13 false true false false 22757000 22757000 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 4214000 4214000 true false false 28 false true false false 6152000 6152000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 9046000 9046000 true false false 32 false true false false 36907000 36907000 true false false 33 false true false false 46917000 46917000 true false false 34 false false false false 0 0 true false false 35 false true false false -34431000 -34431000 true false false 36 false true false false -24021000 -24021000 true false false 37 false true false false -64152000 -64152000 true false false 38 false true false false -45728000 -45728000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Interest income and other, net No authoritative reference available. true 54 4 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 282500000 282500000 true false false 2 false true false false 716529000 716529000 true false false 3 false true false false 1002344000 1002344000 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 true false false 232957000 232957000 true false false 7 false true false false 392680000 392680000 true false false 8 false true false false 611590000 611590000 true false false 9 false true false false 806684000 806684000 true false false 10 false false false false 0 0 true false false 11 false true false false 117351000 117351000 true false false 12 false true false false 412088000 412088000 true false false 13 false true false false 290232000 290232000 true false false 14 false true false false 844915000 844915000 true false false 15 false false false false 0 0 true false false 16 false true false false 10583000 10583000 true false false 17 false true false false 185300000 185300000 true false false 18 false true false false 7976000 7976000 true false false 19 false true false false 288340000 288340000 true false false 20 false false false false 0 0 true false false 21 false true false false 232398000 232398000 true false false 22 false true false false 227072000 227072000 true false false 23 false true false false 612607000 612607000 true false false 24 false true false false 499122000 499122000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 127331000 127331000 true false false 28 false true false false 306660000 306660000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 334825000 334825000 true false false 32 false true false false 779606000 779606000 true false false 33 false true false false 1013786000 1013786000 true false false 34 false false false false 0 0 true false false 35 false true false false -772945000 -772945000 true false false 36 false true false false -1232274000 -1232274000 true false false 37 false true false false -1892142000 -1892142000 true false false 38 false true false false -2450503000 -2450503000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 false 55 4 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -49543000 -49543000 true false false 2 false true false false -104939000 -104939000 true false false 3 false true false false -195277000 -195277000 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 383000 383000 true false false 10 false false false false 0 0 true false false 11 false true false false -10351000 -10351000 true false false 12 false true false false -289000 -289000 true false false 13 false true false false -9092000 -9092000 true false false 14 false true false false -1807000 -1807000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false true false false -4150000 -4150000 true false false 18 false false false false 0 0 true false false 19 false true false false -5434000 -5434000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false -39192000 -39192000 true false false 32 false true false false -95847000 -95847000 true false false 33 false true false false -188419000 -188419000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b true 56 4 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 232957000 232957000 true false false 2 false true false false 611590000 611590000 true false false 3 false true false false 807067000 807067000 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 true false false 232957000 232957000 true false false 7 false true false false 392680000 392680000 true false false 8 false true false false 611590000 611590000 true false false 9 false true false false 807067000 807067000 true false false 10 false false false false 0 0 true false false 11 false true false false 107000000 107000000 true false false 12 false true false false 411799000 411799000 true false false 13 false true false false 281140000 281140000 true false false 14 false true false false 843108000 843108000 true false false 15 false false false false 0 0 true false false 16 false true false false 10583000 10583000 true false false 17 false true false false 181150000 181150000 true false false 18 false true false false 7976000 7976000 true false false 19 false true false false 282906000 282906000 true false false 20 false false false false 0 0 true false false 21 false true false false 232398000 232398000 true false false 22 false true false false 227072000 227072000 true false false 23 false true false false 612607000 612607000 true false false 24 false true false false 499122000 499122000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 127331000 127331000 true false false 28 false true false false 306660000 306660000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false true false false 295633000 295633000 true false false 32 false true false false 683759000 683759000 true false false 33 false true false false 825367000 825367000 true false false 34 false false false false 0 0 true false false 35 false true false false -772945000 -772945000 true false false 36 false true false false -1232274000 -1232274000 true false false 37 false true false false -1892142000 -1892142000 true false false 38 false true false false -2450503000 -2450503000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 true 58 4 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income. false 59 5 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 true false false 2 false true false false 898119000 898119000 true false false 3 false true false false 1001237000 1001237000 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 true false false -163000 -163000 true false false 9 false true false false -9440000 -9440000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false -36375000 -36375000 true false false 14 false true false false 26291000 26291000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 3592000 3592000 true false false 19 false true false false 23663000 23663000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false -4400000 -4400000 true false false 24 false true false false 3331000 3331000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false true false false 60000 60000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false 935405000 935405000 true false false 33 false true false false 957392000 957392000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 60 4 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 61 5 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false false false false 0 0 true false false 2 false true false false -548881000 -548881000 true false false 3 false true false false -593694000 -593694000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false -184963000 -184963000 true false false 14 false true false false -275153000 -275153000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false true false false -12412000 -12412000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false -363918000 -363918000 true false false 33 false true false false -306129000 -306129000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c true 62 5 us-gaap_RepaymentOfNotesReceivableFromRelatedParties us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false true false false 42775000 42775000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false true false false 331900000 331900000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false true false false -374675000 -374675000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 true 63 5 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 true false false 2 false true false false -548881000 -548881000 true false false 3 false true false false -593694000 -593694000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false -184963000 -184963000 true false false 14 false true false false -275153000 -275153000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false true false false 30363000 30363000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false -363918000 -363918000 true false false 33 false true false false 25771000 25771000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false true false false -374675000 -374675000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 64 4 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 65 5 us-gaap_RepaymentsOfLongTermLinesOfCredit us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true 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 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false true false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false true false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false true false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false true false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false true false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false true false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b false 66 5 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -172700000 -172700000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false true false false -150000000 -150000000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false true false false -22700000 -22700000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b false 67 5 ne_AdvancesToFromAffiliates ne false credit duration Advances To From Affiliates. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 true false false 1862000 1862000 true false false 9 false true false false 389604000 389604000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 221265000 221265000 true false false 14 false true false false 280575000 280575000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false -3592000 -3592000 true false false 19 false true false false 100158000 100158000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 4400000 4400000 true false false 24 false true false false -3331000 -3331000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false true false false -60000 -60000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false -223875000 -223875000 true false false 33 false true false false -767006000 -767006000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Advances To From Affiliates. No authoritative reference available. false 68 5 us-gaap_RepaymentsOfRelatedPartyDebt us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 300000000 300000000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false true false false 31900000 31900000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false true false false 42775000 42775000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false true false false -374675000 -374675000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow for the payment of borrowing made from related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b false 69 5 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -60867000 -60867000 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 -60867000 -60867000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow to reacquire common stock during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a false 70 5 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -15886000 -15886000 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 -15886000 -15886000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 true 71 5 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -249453000 -249453000 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 true false false 1862000 1862000 true false false 9 false true false false 12851000 12851000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 221265000 221265000 true false false 14 false true false false 248675000 248675000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false -3592000 -3592000 true false false 19 false true false false -49842000 -49842000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 4400000 4400000 true false false 24 false true false false -3331000 -3331000 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false true false false -60000 -60000 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false -223875000 -223875000 true false false 33 false true false false -832481000 -832481000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false true false false 374675000 374675000 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 72 4 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 true false false 2 false true false false 349238000 349238000 true false false 3 false true false false 158090000 158090000 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 true false false 1699000 1699000 true false false 9 false true false false 3411000 3411000 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false -73000 -73000 true false false 14 false true false false -187000 -187000 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false true false false 4184000 4184000 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false 347612000 347612000 true false false 33 false true false false 150682000 150682000 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net change between the beginning and ending balance of cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 false 73 4 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 true false false 2 false true false false 726225000 726225000 true false false 3 false true false false 513311000 513311000 true false false 4 false true false false 513311000 513311000 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 true false false 3000 3000 true false false 9 false true false false 661000 661000 true false false 10 false true false false 661000 661000 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false true false false 268000 268000 true false false 14 false true false false 445000 445000 true false false 15 false true false false 445000 445000 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false true false false 0 0 true false false 19 false true false false 26000 26000 true false false 20 false true false false 26000 26000 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false 725954000 725954000 true false false 33 false true false false 512179000 512179000 true false false 34 false true false false 512179000 512179000 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 74 4 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 1075463000 1075463000 true false false 2 false true false false 1075463000 1075463000 true false false 3 false true false false 671401000 671401000 true false false 4 false true false false 726225000 726225000 true false false 5 false false false false 0 0 true false false 6 false true false false 1702000 1702000 true false false 7 false true false false 4072000 4072000 true false false 8 false true false false 1702000 1702000 true false false 9 false true false false 4072000 4072000 true false false 10 false true false false 3000 3000 true false false 11 false true false false 195000 195000 true false false 12 false true false false 258000 258000 true false false 13 false true false false 195000 195000 true false false 14 false true false false 258000 258000 true false false 15 false true false false 268000 268000 true false false 16 false true false false 0 0 true false false 17 false true false false 4210000 4210000 true false false 18 false true false false 0 0 true false false 19 false true false false 4210000 4210000 true false false 20 false true false false 0 0 true false false 21 false true false false 0 0 true false false 22 false false false false 0 0 true false false 23 false true false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 0 0 true false false 26 false false false false 0 0 true false false 27 false true false false 0 0 true false false 28 false true false false 0 0 true false false 29 false false false false 0 0 true false false 30 false true false false 0 0 true false false 31 false true false false 1073566000 1073566000 true false false 32 false true false false 1073566000 1073566000 true false false 33 false true false false 662861000 662861000 true false false 34 false true false false 725954000 725954000 true false false 35 false true false false 0 0 true false false 36 false false false false 0 0 true false false 37 false true false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false 0 0 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 75 2 ne_GuaranteesOfRegisteredSecuritiesTextualsAbstract ne false na duration Guarantees of Registered Securities Textuals. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:stringItemType string Guarantees of Registered Securities Textuals. false 76 3 us-gaap_DebtInstrumentInterestRateStatedPercentage us-gaap true na instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 0.07375 0.07375 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false us-types:percentItemType pure Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 77 3 us-gaap_DebtInstrumentFaceAmount 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 true false false 2 false false false false 0 0 true 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 250000000 250000000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 false 78 3 us-gaap_SeniorNotes 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 true false false 2 false false false false 0 0 true 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 249440000 249440000 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 false 79 3 ne_AdjustmentToInvestmentsInAffiliatesAndNotesPayableToAffiliates ne false debit instant Increase Investment In Subsidiaries And Intercompany Notes Payable Resulting From Non Cash Intercompany. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false true false false 550000000 550000000 true false false 26 false true false false 550000000 550000000 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Increase Investment In Subsidiaries And Intercompany Notes Payable Resulting From Non Cash Intercompany. No authoritative reference available. false 80 3 ne_AdjustmentToInvestmentsInAffiliates ne false debit instant Increase (decrease) in investments in affiliates false false false false false false false false false false false terselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false true false false 405000000 405000000 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Increase (decrease) in investments in affiliates No authoritative reference available. false 81 3 ne_AdjustmentToAccountsPayableToAffiliates ne false credit instant Adjustment to accounts payable to affiliates false false false false false false false false false false false terselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false true false false 1200000000 1200000000 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Adjustment to accounts payable to affiliates No authoritative reference available. false 82 3 ne_AdjustmentToShareholdersEquity ne false credit instant Adjustment to shareholders equity false false false false false false false false false false true negated false 1 false false false false 0 0 true false false 2 false false false false 0 0 true 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 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 true true false false 843000000 843000000 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false xbrli:monetaryItemType monetary Adjustment to shareholders equity No authoritative reference available. false 39 73 false NoRounding UnKnown UnKnown false true