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Commitments and Contingencies - Employment Contracts (Details) - Petrello $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) item
Employment contracts |
Employment agreement amount of group life insurance multiplier of base salary | item | 3
Insurance policy amount | $ | $ 5

X
- Definition Represents the amount of group life insurance payable, as multiplier of base salary, under the employment agreement. + References No definition available. + Details
Name: | nbr_EmploymentAgreementAmountOfGroupLifeInsuranceMultiplierOfBaseSalary
Namespace Prefix: | nbr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the insurance policy amount covered under the employment agreement. + References No definition available. + Details
Name: | nbr_EmploymentAgreementInsurancePolicyAmount
Namespace Prefix: | nbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=us-gaap_ChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |