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Debt (Details 2) (USD $) |  | 6 Months Ended |  | 0 Months Ended |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 Revolving Credit Facility | Jun. 30, 2013 Revolving Credit Facility Minimum | Jun. 30, 2013 Commercial paper | Jun. 30, 2013 Commercial paper Nabors Delaware | Apr. 30, 2013 Commercial paper Nabors Delaware | Apr. 30, 2013 Commercial paper Nabors Delaware Maximum
Debt |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 1,500,000,000 |
Debt instrument, maturity term |  |  |  |  |  | 397 days
Remaining period to maturity |  | 1 year |  |  |  |
Debt issued |  |  |  | 295,000,000 |  |
Borrowing capacity under revolving credit facilities | 1,200,000,000 |  |  |  |  |
Maximum borrowing capacity | $ 1,500,000,000 |  |  |  |  |
Weighted average interest rate on revolving credit facilities (as a percent) | 1.54% |  | 0.40% |  |  |

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- Definition Increase of additional borrowings on existing and new debt instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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