| **Commitments and Contingencies - Narrative (Details) $ in Thousands**   | 1 Months Ended | 12 Months Ended | 48 Months Ended |
|--------------------------------------------------------------------------|----------------|-----------------|-----------------|
||
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Wells requiring corrective action | well                                 |           | 5               |            |   |   |   |
| Wells alleged noncompliance | well                                       | 8              |            |            |   |   |   |
| Settlement amount                                                        | $ 1,600        | $ 135           |            |   |   |   |
| Commitment amount                                                        |           |            | $ 1,500,000     |   |   |   |
| Rental expense for office buildings and oil and gas operations equipment |           |            | 90,000          | $ 69,000 | $ 76,000 |   |
| Consent Decree                                                           |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Corrective actions                                                       |           |            | 5,000           |   |   | $ 84,000 |
| Mitigation projects                                                      |           |            | 4,000           |   |   |   |
| Supplemental environmental projects                                      |           |            | 4,000           |   |   |   |
| Consent Decree - Corrective Actions At Certain Tank Systems              |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Corrective actions                                                       |           |            |            |   |   | $ 77,000 |
| Other Transportation and Gathering Obligations                           |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Commitment amount                                                        |           |            | $ 612,000       |   |   |   |
| Minimum                                                                  |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Term                                                                     |           |            | 4 years         |   |   |   |
| Minimum | Marcellus Shale Firm Transportation and Other Obligations (1)  |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Term                                                                     |           |            | 2 years         |   |   |   |
| Maximum                                                                  |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Term                                                                     |           |            | 15 years        |   |   |   |
| Maximum | Marcellus Shale Firm Transportation and Other Obligations (1)  |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Term                                                                     |           |            | 10 years        |   |   |   |
| Administrative Penalty Subject To Deferral Period                        |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Settlement amount                                                        |           | $ 41            |            |   |   |   |
| Administrative Penalty Subject To Offset                                 |           |            |            |   |   |   |
| **Other Commitments [Line Items]**                                       |           |            |            |   |   |   |
| Settlement amount                                                        | $ 1,400        |            |            |   |   |   |

| X                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Consent Decree total
+ References
No definition available.
+ Details**Name:**nbl_ConsentDecreetotal**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Loss Contingency, Settlement Amount
+ References
No definition available.
+ Details**Name:**nbl_LossContingencySettlementAmount**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Mitigation projects
+ References
No definition available.
+ Details**Name:**nbl_Mitigationprojects**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Regulatory Requirements, Wells Alleged Noncompliance
+ References
No definition available.
+ Details**Name:**nbl_RegulatoryRequirementsWellsAllegedNoncompliance**Namespace Prefix:**nbl_**Data Type:**xbrli:integerItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Regulatory Requirements, Wells Requiring Corrective Actions
+ References
No definition available.
+ Details**Name:**nbl_RegulatoryRequirementsWellsRequiringCorrectiveActions**Namespace Prefix:**nbl_**Data Type:**xbrli:integerItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Supplemental environmental projects
+ References
No definition available.
+ Details**Name:**nbl_Supplementalenvironmentalprojects**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The minimum amount the entity agreed to spend under the long-term purchase commitment.
+ References
No definition available.
+ Details**Name:**us-gaap_LongTermPurchaseCommitmentAmount**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
No definition available.
+ Details**Name:**us-gaap_LongtermPurchaseCommitmentPeriod**Namespace Prefix:**us-gaap_**Data Type:**xbrli:durationItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.
+ References
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717
+ Details**Name:**us-gaap_OperatingLeasesRentExpenseNet**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
+ Details**Name:**us-gaap_OtherCommitmentsLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_OtherCommitmentsAxis=nbl_ConsentDecreeCorrectiveActionsAtCertainTankSystemsMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_OtherCommitmentsAxis=nbl_OtherTransportationandGatheringObligationsMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                       |
|-------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**srt_RangeAxis=srt_MinimumMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_OtherCommitmentsAxis=nbl_MarcellusShaleFirmTransportationAgreementMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                       |
|-------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**srt_RangeAxis=srt_MaximumMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_LossContingenciesByNatureOfContingencyAxis=nbl_AdministrativePenaltySubjectToDeferralPeriodMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_LossContingenciesByNatureOfContingencyAxis=nbl_AdministrativePenaltySubjectToOffsetMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |