XML 84 R70.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Financial Instruments and Risk Concentration (Details) | Dec. 31, 2017
--- | ---
2.35% senior notes due September 2016 |
Debt Instrument, Interest Rate, Stated Percentage | 2.35%
6.15% senior notes due February 2018 |
Debt Instrument, Interest Rate, Stated Percentage | 6.15%
9.25% senior notes due January 2019 |
Debt Instrument, Interest Rate, Stated Percentage | 9.25%
5.00% senior notes due September 2020 |
Debt Instrument, Interest Rate, Stated Percentage | 5.00%
4.625% senior notes due September 2021 |
Debt Instrument, Interest Rate, Stated Percentage | 4.625%
5.50% senior notes due January 2023 |
Debt Instrument, Interest Rate, Stated Percentage | 5.50%
5.10% senior notes due September 2023 |
Debt Instrument, Interest Rate, Stated Percentage | 5.10%

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotesDueTwoZeroOneSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotesDueTwoZeroOneEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotesDueTwoZeroOneNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotesDueTwoZeroTwoZeroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotesDueTwoZeroTwoOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotes5.50PercentageDueTwoZeroTwoThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotesDueTwoZeroTwoThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |