XML 99 R85.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Commitments and Contingencies - Saudi Aramco (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) item
Additional contribution amount | $ 204.0
Saudi Aramco |
Contribution | 20.0
Joint Venture in Saudi Arabia |
Additional contribution amount | $ 204.0
Number of additional drilling units and related assets contributed | item | 5
Number of drilling units to backstop entity share to purchase in the event of insufficient cash | item | 25

X
- Definition Amount of additional contribution in joint venture. + References No definition available. + Details
Name: | nbr_AdditionalContributionAmount
Namespace Prefix: | nbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of initial contribution in joint venture. + References No definition available. + Details
Name: | nbr_InitialContributionAmount
Namespace Prefix: | nbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the number of additional drilling units and related assets contributed. + References No definition available. + Details
Name: | nbr_NumberOfAdditionalDrillingUnitsAndRelatedAssetsContributed
Namespace Prefix: | nbr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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

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

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