|**Acquisitions and Divestitures**                          | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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|**Discontinued Operations and Disposal Groups [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Acquisitions and Divestitures                              | 4. Acquisitions and Divestitures2017 Asset TransactionsDuring the first nine months of 2017, we engaged in the following asset transactions.Marcellus Shale Upstream DivestitureOn June 28, 2017, we closed the sale of all of our Marcellus Shale upstream assets, which are primarily natural gas properties. The sales price totaled$1.2 billion, and we received$1.0 billionof net cash proceeds, after consideration of customary adjustments, at closing. The sales price includes additional contingent consideration of up to$100 millionstructured asthreeseparate payments of$33.3 millioneach.  The contingent payments are in effect should the average annual price of the Appalachia Dominion, South Point index exceed$3.30per MMBtu in the individual annual periods from 2018 through 2020. To date, conditions for the recognition of the contingent consideration are not probable and therefore, no amounts have been accrued related to the contingent consideration. Proceeds from the transaction were used to repay borrowings resulting from the Clayton Williams Energy Acquisition.  SeeNote6. Debt.In second quarter 2017, we recognized a total loss of$2.3 billion, or$1.5 billionafter-tax, on this transaction. The aggregate net book value of the properties prior to the sale was approximately$3.4 billion, which included approximately$883 millionof undeveloped leasehold cost.As part of the total loss, we recorded a charge of$41 million, discounted, relating to a retained transportation contract where the pipeline project is currently in service. We no longer have production to satisfy this commitment and do not plan to utilize this capacity in the future. As such, we recorded a charge in accordance with accounting for exit or disposal activities under ASC 420 - Exit or Disposal Cost Obligations. In addition, we have retained other Marcellus Shale firm transportation contracts, relating to pipeline projects which are not yet commercially available to us. These projects are either under construction or have not yet been approved by the Federal Energy Regulatory Commission (FERC). As these projects become commercially available to us, we will assess, based upon the facts and circumstances, the recognition of any potential exit cost liabilities. It is likely we will incur additional firm transportation, as well as other restructuring or office closure costs, associated with this exit activity in the future. SeeNote2. Basis of PresentationandNote12. Commitments and Contingencies.For thenine months ended September 30, 2017, our consolidated statements of operations include a pre-tax loss of$2.3 billionassociated with the divested Marcellus Shale upstream assets, driven by the loss on sale. For thethree and ninemonths endedSeptember 30, 2016, our consolidated statements of operations include a pre-tax loss of$70 millionand$237 million, respectively, associated with the divested Marcellus Shale upstream assets.Production from the Marcellus Shale upstream assets averaged393MMcfe/d and413MMcfe/d for the three and six months ended June 30, 2017. With the closing of the sale, we recorded a decrease in net proved reserves of approximately241MMBoe, of which approximately190MMBoe were proved developed reserves and51MMBoe were proved undeveloped reserves as of June 30, 2017.Marcellus Shale CONE Gathering DivestitureOn May 18, 2017, we announced the signing of a definitive agreement to divest an affiliate that holds the50%interest in CONE Gathering, LLC (CONE Gathering) and21.7 millioncommon and subordinated limited partnership units in CONE Midstream Partners LP (NYSE:CNNX) (CONE Midstream), for total cash consideration of$765 million. CONE Gathering owns the general partner of CONE Midstream, and the limited partnership units represent a33.5%ownership interest in CONE Midstream. CONE Midstream constructs, owns and operates natural gas gathering and other midstream energy assets in support of Marcellus Shale activities.In connection with the execution of the definitive agreement to divest the affiliate noted above, the other50%owner of CONE Gathering filed suit to enjoin the transaction. A bench trial was concluded on October 20, 2017 and we are awaiting a decision from the court. We believe that the court will decide in our favor. However, given the pendency of the matter and the possibility of appeal, our ability to close the transaction as originally contemplated is uncertain at this time.We are committed to exiting the Marcellus Shale play, and going forward, our midstream efforts are primarily focused on Noble Midstream Partners, supporting our DJ Basin and Delaware Basin growth areas. We believe that classification of our investment in CONE Gathering as assets held for sale as ofSeptember 30, 2017remains appropriate.Assets Held for SaleAtSeptember 30, 2017, assets held for sale was primarily related to$173 millionfor our investment in CONE Gathering.Other US Onshore PropertiesWe conducted the following transactions:•Onshore US DivestituresIn third quarter 2017, we received proceeds of$24 millionresulting from the sale of certain other onshore US properties and the remaining consideration associated with the Greeley Crescent divestiture (defined below) in the DJ Basin.•Delaware Basin AcquisitionIn first quarter 2017, we closed a bolt-on acquisition in the Delaware Basin for$301 million, approximately$246 millionof which was allocated to undeveloped leasehold cost. The acquisition includedsevenproducing wells, of whichfourare operated by us.Noble Midstream PartnersAsset ContributionOn June 26, 2017, Noble Midstream Partners acquired an additional15%limited partner interest in Blanco River DevCo LP (Blanco River DevCo), increasing its ownership to40%of the Blanco River DevCo LP, and acquired the remaining20%limited partner interest in Colorado River DevCo LP (Colorado River DevCo) from us for$270 million.Blanco River DevCo holds Noble Midstream Partners’ Delaware Basin in-field gathering dedications for crude oil and produced water gathering services on approximately111,000net acres, with substantially all of the acreage also dedicated for natural gas gathering. Colorado River DevCo provides services across our development areas in the DJ Basin, including crude oil and natural gas gathering and water services in the Wells Ranch area and crude oil gathering in the East Pony area.The$270 millionconsideration consisted of$245 millionin cash and562,430common units representing limited partner interests in Noble Midstream Partners. Noble Midstream Partners funded the cash consideration with approximately$138 millionof net proceeds from a concurrent private placement of common units and$90 millionof borrowings under the Noble Midstream Services Revolving Credit Facility (defined below) and the remainder from cash on hand.Advantage AcquisitionOn April 3, 2017, Noble Midstream Partners and Plains Pipeline, L.P., a wholly owned subsidiary of Plains All American Pipeline, L.P., acquired Advantage Pipeline, L.L.C. (Advantage Pipeline) for$133 millionthrough a newly formed50/50 joint venture (Advantage Joint Venture). Noble Midstream Partners contributed$67million of cash to the joint venture, funded by available cash on hand and the Noble Midstream Services Revolving Credit Facility. The Advantage Joint Venture is accounted for under the equity method and is included within our Midstream segment.Noble Midstream Partners serves as the operator of the Advantage Pipeline system, which includes a70-mile crude oil pipeline in the Delaware Basin from Reeves County, Texas to Crane County, Texas with150,000barrels per day of shipping capacity (expandable to over200,000barrels per day) and490,000barrels of storage capacity.2016 Asset TransactionsDuring the first nine months of 2016, we engaged in the following asset transactions.US Onshore PropertiesWe entered into the following transactions:•Bowdoin DivestitureWe closed the divestiture of our Bowdoin property in northern Montana, generating proceeds of$43 million, and recognized a$23 millionloss on sale;•Onshore US DivestituresWe sold certain other US onshore properties, generating net proceeds of$20 million, which were primarily applied to the DJ Basin depletable field, with no recognition of gain or loss;•Greeley Crescent DivestitureWe entered into a purchase and sale agreement for the divestiture of certain producing and undeveloped interests covering approximately33,100net acres in the Greeley Crescent (Greeley Crescent divestiture) area of the DJ Basin for$505 million, subject to customary closing adjustments. We received proceeds of$486 millionduring second quarter 2016, which were primarily applied to the DJ Basin depletable field, with no recognition of gain or loss. In third quarter 2017, we closed the sale of the remaining properties and received proceeds of$5 million; and•Acreage Exchange AgreementWe entered into an acreage exchange agreement receiving approximately11,700net acres within our Wells Ranch development area in exchange for approximately13,500net acres primarily from our Bronco area, located southwest of Wells Ranch, with no recognition of gain or loss.Cyprus Project (Offshore Cyprus)In first quarter 2017, we received the remaining$40 millionconsideration for the farm-out of a35%interest in Block 12, which includes the Aphrodite natural gas discovery. Proceeds received, including$131 millionin first quarter 2016, were applied to the Cyprus project asset with no gain or loss recognized.Offshore Israel AssetsIn first quarter 2016, we closed the divestment of our47%interest in the Alon A and Alon C licenses, which include the Karish and Tanin fields, for a total sales price of$73 million($67 millionfor asset consideration and$6 millionfor cost adjustments). Proceeds were applied to reduce field basis with no recognition of gain or loss.
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|•                                                          | Onshore US DivestituresIn third quarter 2017, we received proceeds of$24 millionresulting from the sale of certain other onshore US properties and the remaining consideration associated with the Greeley Crescent divestiture (defined below) in the DJ Basin.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|•                                                          | Delaware Basin AcquisitionIn first quarter 2017, we closed a bolt-on acquisition in the Delaware Basin for$301 million, approximately$246 millionof which was allocated to undeveloped leasehold cost. The acquisition includedsevenproducing wells, of whichfourare operated by us.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|•                                                          | Bowdoin DivestitureWe closed the divestiture of our Bowdoin property in northern Montana, generating proceeds of$43 million, and recognized a$23 millionloss on sale;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|•                                                          | Onshore US DivestituresWe sold certain other US onshore properties, generating net proceeds of$20 million, which were primarily applied to the DJ Basin depletable field, with no recognition of gain or loss;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|•                                                          | Greeley Crescent DivestitureWe entered into a purchase and sale agreement for the divestiture of certain producing and undeveloped interests covering approximately33,100net acres in the Greeley Crescent (Greeley Crescent divestiture) area of the DJ Basin for$505 million, subject to customary closing adjustments. We received proceeds of$486 millionduring second quarter 2016, which were primarily applied to the DJ Basin depletable field, with no recognition of gain or loss. In third quarter 2017, we closed the sale of the remaining properties and received proceeds of$5 million; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|•                                                          | Acreage Exchange AgreementWe entered into an acreage exchange agreement receiving approximately11,700net acres within our Wells Ranch development area in exchange for approximately13,500net acres primarily from our Bronco area, located southwest of Wells Ranch, with no recognition of gain or loss.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 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