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Commitments and Contingencies - Saudi Aramco (Details) | 12 Months Ended
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Dec. 31, 2020 item
Joint Venture in Saudi Arabia |
Number of drilling units to backstop entity share to purchase in the event of insufficient cash | 25

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- Definition Represents the number of drilling units to backstop entity share to purchase in the event of insufficient funds. + References No definition available. + Details
Name: | nbr_NumberOfDrillingUnitsToBackstopEntityShareToPurchaseInEventOfInsufficientCash
Namespace Prefix: | nbr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=nbr_JointVentureInSaudiArabiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |