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Summary of Significant Accounting Policies - Goodwill (Details) | 6 Months Ended
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Jun. 30, 2018
Goodwill [Abstract] |
Long-term growth rate used to calculate terminal values for each reporting unit (as a percent) | 3.00%

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- Definition No Definition Available. + References No definition available. + Details
Name: | nbr_GoodwillAbstract
Namespace Prefix: | nbr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the growth rate used to calculate terminal values for each reporting unit using a Gordon Growth methodology. + References No definition available. + Details
Name: | nbr_PercentageOfGrowthRateUsedToCalculateTerminalValueOfEachReportingUnit
Namespace Prefix: | nbr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration