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v3.20.2

Subsequent Events (Details) - $ / shares | Jun. 30, 2020 | May 05, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Subsequent event |  |  |
Preferred shares, par value (in dollars per share) | $ 0.001 |  | $ 0.001
Minimum |  |  |
Subsequent event |  |  |
Additional ownership percentage acquired for right trigger |  | 0.50% |

X
- Definition Represents additional ownership to be acquired apart from minimum threshold for right trigger. + References No definition available. + Details
Name: | nbr_RightsTriggerAdditionalOwnershipAcquiredPercentage
Namespace Prefix: | nbr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |