Represents the amount of per-occurrence deductible which the entity has on its automobile insurance claims.

No definition available.

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- Definition

Represents the amount of employer's liability claims subject to per-occurrence deductible.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of general liability claims subject to per-occurrence deductible.

+ References

No definition available.

+ Details

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Namespace Prefix:	nbr_
Data Type:	xbrli:monetaryItemType
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- Definition

The amount the liability recorded for the income tax examination increased or decreased in the current year/accounting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The estimated range of reasonably possible losses resulting from an adverse position taken by a taxing authority.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 14

-Paragraph 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)(3)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2013 Minimum	Jun. 30, 2013 Maximum	Mar. 31, 2013 Mexico
Income tax contingencies
Aggregate remaining amounts assessed or expected to assessed range		$ 30	$ 35
Aggregate remaining amounts assessed or expected to assessed range				20
Employer's liability claims subject to per-occurrence deductible	2.0
Workers automobile claims	1.0
General liability claims subject to per-occurrence deductible	$ 5.0