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Income Taxes (Details 6) (USD $) | Dec. 31, 2014
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Operating Loss Carryforwards |
Deferred tax asset relating to NOL carryforwards that have an indefinite life | $ 1,430,000,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
Recognized valuation allowance relating to NOL carryforwards | 1,430,000,000 us-gaap_OperatingLossCarryforwardsValuationAllowance
Operating Loss Carryforwards |
Expiring NOLs | 595,004,000 nbr_OperatingLossCarryforward
Non-expiring NOLs | 4,898,787,000 nbr_OperatingLossNonExpiringCarryforwards
Total | 5,493,791,000 us-gaap_OperatingLossCarryforwards
2015 |
Operating Loss Carryforwards |
Expiring NOLs | 8,295,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod1Member
2016 |
Operating Loss Carryforwards |
Expiring NOLs | 27,847,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod2Member
2017 |
Operating Loss Carryforwards |
Expiring NOLs | 34,729,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod3Member
2018 |
Operating Loss Carryforwards |
Expiring NOLs | 48,559,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod4Member
2019 |
Operating Loss Carryforwards |
Expiring NOLs | 15,997,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod5Member
2020 |
Operating Loss Carryforwards |
Expiring NOLs | 15,115,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod6Member
2021 |
Operating Loss Carryforwards |
Expiring NOLs | 21,354,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod7Member
2022 |
Operating Loss Carryforwards |
Expiring NOLs | 1,282,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod8Member
2023 |
Operating Loss Carryforwards |
Expiring NOLs | 2,965,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod9Member
2024 |
Operating Loss Carryforwards |
Expiring NOLs | 7,583,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod10Member
2028 |
Operating Loss Carryforwards |
Expiring NOLs | 8,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod11Member
2030 |
Operating Loss Carryforwards |
Expiring NOLs | 99,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod12Member
2031 |
Operating Loss Carryforwards |
Expiring NOLs | 242,703,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod13Member
2032 |
Operating Loss Carryforwards |
Expiring NOLs | 75,257,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod14Member
2033 |
Operating Loss Carryforwards |
Expiring NOLs | 83,601,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod15Member
2034 |
Operating Loss Carryforwards |
Expiring NOLs | 9,610,000 nbr_OperatingLossCarryforward / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod16Member
Internal Revenue Service (IRS) |
Operating Loss Carryforwards |
Expiring NOLs | 214,281,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember
Total | 214,281,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember
Internal Revenue Service (IRS) | 2019 |
Operating Loss Carryforwards |
Expiring NOLs | 13,369,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod5Member
Internal Revenue Service (IRS) | 2031 |
Operating Loss Carryforwards |
Expiring NOLs | 200,912,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod13Member
Mexico |
Operating Loss Carryforwards |
Expiring NOLs | 380,723,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Non-expiring NOLs | 4,898,787,000 nbr_OperatingLossNonExpiringCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Total | 5,279,510,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Mexico | 2015 |
Operating Loss Carryforwards |
Expiring NOLs | 8,295,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod1Member
Mexico | 2016 |
Operating Loss Carryforwards |
Expiring NOLs | 27,847,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod2Member
Mexico | 2017 |
Operating Loss Carryforwards |
Expiring NOLs | 34,729,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod3Member
Mexico | 2018 |
Operating Loss Carryforwards |
Expiring NOLs | 48,559,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod4Member
Mexico | 2019 |
Operating Loss Carryforwards |
Expiring NOLs | 2,628,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod5Member
Mexico | 2020 |
Operating Loss Carryforwards |
Expiring NOLs | 15,115,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod6Member
Mexico | 2021 |
Operating Loss Carryforwards |
Expiring NOLs | 21,354,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod7Member
Mexico | 2022 |
Operating Loss Carryforwards |
Expiring NOLs | 1,282,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod8Member
Mexico | 2023 |
Operating Loss Carryforwards |
Expiring NOLs | 2,965,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod9Member
Mexico | 2024 |
Operating Loss Carryforwards |
Expiring NOLs | 7,583,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod10Member
Mexico | 2028 |
Operating Loss Carryforwards |
Expiring NOLs | 8,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod11Member
Mexico | 2030 |
Operating Loss Carryforwards |
Expiring NOLs | 99,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod12Member
Mexico | 2031 |
Operating Loss Carryforwards |
Expiring NOLs | 41,791,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod13Member
Mexico | 2032 |
Operating Loss Carryforwards |
Expiring NOLs | 75,257,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod14Member
Mexico | 2033 |
Operating Loss Carryforwards |
Expiring NOLs | 83,601,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod15Member
Mexico | 2034 |
Operating Loss Carryforwards |
Expiring NOLs | 9,610,000 nbr_OperatingLossCarryforward / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / nbr_TaxCreditAndLossCarryForwardsExpirationPeriodAxis = nbr_ExpirationPeriod16Member
State and Local Jurisdiction |
Operating Loss Carryforwards |
NOL carryforwards for alternative minimum tax purpose | 192,000,000 nbr_NetOperatingLossCarryforwardsAlternativeMinimumTax / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember
State and Local Jurisdiction | 2015-2034 |
Operating Loss Carryforwards |
NOL carryforwards for alternative minimum tax purpose | $ 313,000,000 nbr_NetOperatingLossCarryforwardsAlternativeMinimumTax / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / nbr_OperatingLossCarryforwardsPeriodAxis = nbr_OperatingLossCarryforwardsPeriodYear2015ToYear2034Member

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