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Commitments and Contingencies (Details 2) (USD $) | 0 Months Ended | 3 Months Ended | 12 Months Ended | 10 Months Ended
--- | --- | --- | --- | ---
Dec. 19, 2014 | Mar. 31, 2013 | Dec. 31, 2014 item | Dec. 31, 2014
Petrello |  |  |  |
Employment contracts |  |  |  |
Initial term of the employment agreement |  | 5 years |  |
Reduced employment annual base salary | $ 1,530,000 nbr_ReducedEmploymentAnnualBaseSalary / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |  |
Automatic extension period |  | 1 year |  |
New term of the employment agreement |  | 90 days |  |
Employment benefit due to death or disability, payment period |  | 30 days |  |
Employment agreement termination without cause, benefit as a ratio to 3 year average base salary and bonus |  | 2.99 nbr_EmploymentAgreementFormulaBenefitRatioToBaseSalaryBeforeDateSpecifiedInContract / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Employment agreement termination without cause, benefit base period |  | 3 years |  |
Salary |  |  | 1,700,000 nbr_EmploymentAgreementSalary / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |
Cash bonus |  |  | 1,700,000 nbr_EmploymentAgreementCashBonus / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |
Employment agreement quarterly deferred bonus |  |  | 300,000 nbr_EmploymentAgreementQuarterlyDeferredBonus / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember | 300,000 nbr_EmploymentAgreementQuarterlyDeferredBonus / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember
Employment agreement amount of group life insurance multiplier of base salary |  |  | 3 nbr_EmploymentAgreementAmountOfGroupLifeInsuranceMultiplierOfBaseSalary / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |
Insurance policy amount |  |  | 5,000,000 nbr_EmploymentAgreementInsurancePolicyAmount / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember | 5,000,000 nbr_EmploymentAgreementInsurancePolicyAmount / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember
Petrello | Total Stockholder Return Performance Shares |  |  |  |
Employment contracts |  |  |  |
Vesting period |  | 3 years |  |
Value of award that will vest as percentage of base salary |  | 150.00%nbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfAwardThatWillVestAsPercentageOfBaseSalary / us-gaap_AwardTypeAxis = nbr_TotalStockholderReturnPerformanceSharesMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Petrello | Performance Shares |  |  |  |
Employment contracts |  |  |  |
Vesting period |  | 3 years |  |
Value of award that will vest as percentage of base salary |  | 200.00%nbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfAwardThatWillVestAsPercentageOfBaseSalary / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Chief Financial Officer |  |  |  |
Employment contracts |  |  |  |
Reduced employment annual base salary | 585,000 nbr_ReducedEmploymentAnnualBaseSalary / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefFinancialOfficerMember |  |  |
Automatic extension period |  |  |  | 1 year
New term of the employment agreement |  |  |  | 365 days
Annual base salary |  |  |  | 650,000 nbr_EmploymentAgreementBaseSalary / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefFinancialOfficerMember
Employment benefit due to death or disability, payment period |  |  |  | 30 days
Employment agreement termination without cause, benefit as a ratio to 3 year average base salary and bonus |  |  |  | 2.99 nbr_EmploymentAgreementFormulaBenefitRatioToBaseSalaryBeforeDateSpecifiedInContract / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefFinancialOfficerMember
Employment agreement termination without cause, benefit base period |  |  |  | 3 years
Chief Financial Officer | Total Stockholder Return Performance Shares |  |  |  |
Employment contracts |  |  |  |
Vesting period |  |  |  | 3 years
Value of award that will vest as percentage of base salary |  |  |  | 100.00%nbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfAwardThatWillVestAsPercentageOfBaseSalary / us-gaap_AwardTypeAxis = nbr_TotalStockholderReturnPerformanceSharesMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefFinancialOfficerMember
Chief Financial Officer | Performance Shares |  |  |  |
Employment contracts |  |  |  |
Vesting period |  |  |  | 3 years
Value of award that will vest as percentage of base salary |  |  |  | 100.00%nbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfAwardThatWillVestAsPercentageOfBaseSalary / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefFinancialOfficerMember
Chief Financial Officer | Restricted Stock |  |  |  |
Employment contracts |  |  |  |
Vesting period |  |  |  | 4 years
Restricted stock award grant date fair value |  |  |  | $ 4,900,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefFinancialOfficerMember

X
- Definition Represents the amount of group life insurance payable, as multiplier of base salary, under the employment agreement. + References No definition available. + Details
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- Definition Represents the base salary specified in the employment agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Represents the amount of cash bonus required to be paid under the employment agreement. + References No definition available. + Details
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- Definition The period of time for which the employment agreement automatically extends. + References No definition available. + Details
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Balance Type: | na
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- Definition Represents the period of time preceding termination without cause used as a basis for calculating a benefit under an employment agreement. + References No definition available. + Details
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Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the ratio of the employment benefit to the average of base salary and annual bonuses during the three year period preceding termination prior to the date specified in the contract. + References No definition available. + Details
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- Definition Represents the initial term of the employment agreement. + References No definition available. + Details
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- Definition Represents the insurance policy amount covered under the employment agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represents the new term of the employment agreement. + References No definition available. + Details
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- Definition The period of time within which the reporting entity must make payment to a beneficiary under an employment agreement if the termination is due to death or disability. + References No definition available. + Details
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- Definition Represents the quarterly deferred bonus payable under the employment agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Represents the amount of salary required to pay under the employment agreement. + References No definition available. + Details
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- Definition Represents the reduced annual base salary. + References No definition available. + Details
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- Definition Represents the value of award that will vest under share-based payment arrangement as a percentage of the base salary. + References No definition available. + Details
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- Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Aggregate value of stock related to Restricted Stock Awards issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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