XML 71 R53.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Fair Value Measurements - Debt (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2021 | Jan. 31, 2017
Fair Value of Financial Instruments |  |  |  |
Less: deferred financing costs | $ 30,805 | $ 22,270 |  |
2018 revolving credit facility |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Effective Interest Rate (as a percent) | 3.72% | 3.53% |  |
4.625% senior notes due September 2021 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 4.625% | 4.625% |  |
Effective Interest Rate (as a percent) |  | 5.65% |  |
5.50% senior notes due January 2023 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 5.50% | 5.50% |  |
Effective Interest Rate (as a percent) | 5.87% | 5.85% |  |
5.10% senior notes due September 2023 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 5.10% | 5.10% |  |
Effective Interest Rate (as a percent) | 5.42% | 5.32% |  |
0.75% senior exchangeable notes due January 2024 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 0.75% |  |  | 0.75%
Effective Interest Rate (as a percent) | 5.90% | 6.06% |  |
5.75% senior notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 5.75% |  |  |
Effective Interest Rate (as a percent) | 6.03% | 6.01% |  |
6.50% senior priority guaranteed notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 6.50% |  | 6.50% |
Effective Interest Rate (as a percent) | 6.50% | 6.50% |  |
9.00% senior priority guaranteed notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 9.00% |  | 9.00% |
Effective Interest Rate (as a percent) | 9.00% | 9.00% |  |
7.25% senior guaranteed notes due January 2026 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 7.25% | 7.25% |  |
Effective Interest Rate (as a percent) | 7.52% | 7.51% |  |
7.375% senior priority guaranteed notes due 2027 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 7.375% |  |  |
Effective Interest Rate (as a percent) | 7.74% |  |  |
7.50% senior guaranteed notes due January 2028 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate on senior notes (as a percent) | 7.50% | 7.50% |  |
Effective Interest Rate (as a percent) | 7.70% | 7.69% |  |
Fair Value |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | $ 3,206,746 | $ 2,229,649 |  |
Fair Value | 2018 revolving credit facility |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 460,000 | 672,500 |  |
Fair Value | 4.625% senior notes due September 2021 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt |  | 78,862 |  |
Fair Value | 5.50% senior notes due January 2023 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 24,736 | 18,768 |  |
Fair Value | 5.10% senior notes due September 2023 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 84,044 | 78,435 |  |
Fair Value | 0.75% senior exchangeable notes due January 2024 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 257,730 | 169,458 |  |
Fair Value | 5.75% senior notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 508,881 | 318,871 |  |
Fair Value | 6.50% senior priority guaranteed notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 50,490 | 44,059 |  |
Fair Value | 9.00% senior priority guaranteed notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 226,914 | 185,221 |  |
Fair Value | 7.25% senior guaranteed notes due January 2026 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 522,079 | 396,106 |  |
Fair Value | 7.375% senior priority guaranteed notes due 2027 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 724,906 |  |  |
Fair Value | 7.50% senior guaranteed notes due January 2028 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 346,966 | 267,369 |  |
Carrying Value |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 3,293,600 | 2,990,971 |  |
Less: deferred financing costs | 30,805 | 22,270 |  |
Debt, net of financing costs | 3,262,795 | 2,968,701 |  |
Carrying Value | 2018 revolving credit facility |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 460,000 | 672,500 |  |
Carrying Value | 4.625% senior notes due September 2021 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt |  | 86,329 |  |
Carrying Value | 5.50% senior notes due January 2023 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 24,446 | 28,443 |  |
Carrying Value | 5.10% senior notes due September 2023 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 82,703 | 121,077 |  |
Carrying Value | 0.75% senior exchangeable notes due January 2024 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 259,839 | 279,700 |  |
Carrying Value | 5.75% senior notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 548,458 | 610,818 |  |
Carrying Value | 6.50% senior priority guaranteed notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 50,485 | 50,485 |  |
Carrying Value | 9.00% senior priority guaranteed notes due February 2025 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 218,082 | 192,032 |  |
Carrying Value | 7.25% senior guaranteed notes due January 2026 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 559,978 | 559,978 |  |
Carrying Value | 7.375% senior priority guaranteed notes due 2027 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | 700,000 |  |  |
Carrying Value | 7.50% senior guaranteed notes due January 2028 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt | $ 389,609 | $ 389,609 |  |

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans, net of financing costs. + References No definition available. + Details
Name: | nbr_DebtInstrumentFairValueNetOfFinancingCost
Namespace Prefix: | nbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_RevolvingCreditFacility2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotes4.625PercentageDueTwoZeroTwoOneMember
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_SeniorNotes5.10PercentageDueTwoZeroTwoThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotes0.75PercentageDueTwoZeroTwoFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorNotes5.75PercentageDueTwoZeroTwoFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorGuaranteedNotes6.50PercentageDueTwoZeroTwoFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorGuaranteedNotes9.00PercentageDueTwoZeroTwoFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorGuaranteedNotes7.25PercentageDueTwoZeroTwoSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorGuaranteedNotes7.375PercentageDueTwoZeroTwoSevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nbr_SeniorGuaranteedNotes7.50PercentageDueTwoZeroTwoEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |