| **Marcellus Shale Firm Transportation Commitments - Narrative (Details) - USD ($) $ in Millions** | 1 Months Ended | 12 Months Ended |
|---------------------------------------------------------------------------------------------------|----------------|-----------------|
||
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Commitment amount                                                                                 |           | $ 1,500         |   |   |
| Purchased Oil and Gas                                                                             |           | 296             | $ 0 | $ 0 |
| Marcellus Shale Firm Transportation and Other Obligations (1)                                     |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Marcellus Exit Cost Accrual                                                                       |           | $ 0             | 93 |   |
| Appalachian Gateway Project                                                                       |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Exit costs                                                                                        |           |            | 41 |   |
| Leach/Rayne Xpress                                                                                |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Exit costs                                                                                        |           |            | $ 52 |   |
| Minimum                                                                                           |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Term                                                                                              |           | 4 years         |   |   |
| Minimum | Marcellus Shale Firm Transportation and Other Obligations (1)                           |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Term                                                                                              |           | 2 years         |   |   |
| Maximum                                                                                           |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Term                                                                                              |           | 15 years        |   |   |
| Maximum | Marcellus Shale Firm Transportation and Other Obligations (1)                           |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Term                                                                                              |           | 10 years        |   |   |
| Subsequent Event | Leach/Rayne Xpress                                                             |           |            |   |   |
| **Long-term Purchase Commitment [Line Items]**                                                    |           |            |   |   |
| Exit costs                                                                                        | $ 92           |            |   |   |
| Commitment reduction                                                                              | $ 350          |            |   |   |

| X                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Long-term Purchase Commitment, Accrual
+ References
No definition available.
+ Details**Name:**nbl_LongtermPurchaseCommitmentAccrual**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Long-term Purchase Commitment, Exit Costs
+ References
No definition available.
+ Details**Name:**nbl_LongtermPurchaseCommitmentExitCosts**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Long-term Purchase Commitment, Reduction
+ References
No definition available.
+ Details**Name:**nbl_LongtermPurchaseCommitmentReduction**Namespace Prefix:**nbl_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Costs of generating revenue from oil and gas-related services including well services (such as drilling, rigs and analytic evaluations), transportation, and other supporting contractor services, during the reporting period.
+ References
No definition available.
+ Details**Name:**us-gaap_CostOfServicesOilAndGas**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**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
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_LongTermPurchaseCommitmentLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**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                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_OtherCommitmentsAxis=nbl_MarcellusShaleFirmTransportationAgreementMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_OtherCommitmentsAxis=nbl_AppalachianGatewayProjectMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_OtherCommitmentsAxis=nbl_LeachRayneXpressMember**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:**srt_RangeAxis=srt_MaximumMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |