| **Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions** | 3 Months Ended | 9 Months Ended |
|----------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Revenues**                                                                                                   |           |           |   |   |
| Total                                                                                                          | $ 1,273        | $ 960          | $ 3,789 | $ 3,055 |
| **Costs and Expenses**                                                                                         |           |           |   |   |
| Production Expense                                                                                             | 273            | 280            | 886 | 866 |
| Exploration Expense                                                                                            | 25             | 64             | 89 | 136 |
| Depreciation, Depletion and Amortization                                                                       | 485            | 523            | 1,418 | 1,554 |
| Loss on Marcellus Shale Exit Activities                                                                        | 0              | 4              | 0 | 2,326 |
| Gain on Divestitures, Net                                                                                      | (193)          | 0              | (859) | 0 |
| Asset Impairments                                                                                              | 0              | 0              | 168 | 0 |
| General and Administrative                                                                                     | 107            | 102            | 316 | 304 |
| Other Operating Expense (Income), Net                                                                          | 78             | (15)           | 222 | 132 |
| Total                                                                                                          | 775            | 958            | 2,240 | 5,318 |
| Operating Income (Loss)                                                                                        | 498            | 2              | 1,549 | (2,263) |
| **Other (Income) Expense**                                                                                     |           |           |   |   |
| Loss (Gain) on Commodity Derivative Instruments                                                                | 155            | 22             | 483 | (145) |
| (Gain) Loss on Extinguishment of Debt                                                                          | 0              | (98)           | 3 | (98) |
| Interest, Net of Amount Capitalized                                                                            | 70             | 88             | 216 | 271 |
| Other Non-Operating (Income) Expense, Net                                                                      | (34)           | 100            | (10) | 94 |
| Total                                                                                                          | 191            | 210            | 689 | 220 |
| Income (Loss) Before Income Taxes                                                                              | 307            | (208)          | 860 | (2,483) |
| Income Tax Expense (Benefit)                                                                                   | 59             | (93)           | 44 | (917) |
| Net Income (Loss) and Comprehensive Income (Loss) Including Noncontrolling Interests                           | 248            | (115)          | 816 | (1,566) |
| Less: Net Income and Comprehensive Income Attributable to Noncontrolling Interests                             | 21             | 21             | 58 | 46 |
| Net Income (Loss) and Comprehensive Income (Loss) Attributable to Noble Energy                                 | $ 227          | $ (136)        | $ 758 | $ (1,612) |
| **Net Income (Loss) Attributable to Noble Energy per Common Share**                                            |           |           |   |   |
| Basic ($ per share)                                                                                            | $ 0.47         | $ (0.28)       | $ 1.57 | $ (3.47) |
| Diluted ($ per share)                                                                                          | $ 0.47         | $ (0.28)       | $ 1.56 | $ (3.47) |
| **Weighted Average Number of Common Shares Outstanding**                                                       |           |           |   |   |
| Basic (in shares)                                                                                              | 482            | 487            | 484 | 464 |
| Diluted (in shares)                                                                                            | 484            | 487            | 486 | 464 |
| Oil, NGL and Gas Sales                                                                                         |           |           |   |   |
| **Revenues**                                                                                                   |           |           |   |   |
| Revenue from Sales                                                                                             | $ 1,136        | $ 907          | $ 3,409 | $ 2,918 |
| Sales of Purchased Oil and Gas and Other                                                                       |           |           |   |   |
| **Revenues**                                                                                                   |           |           |   |   |
| Revenue from Sales                                                                                             | $ 137          | $ 53           | $ 380 | $ 137 |

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
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| - Definition
Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.
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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.
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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
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| - Definition
Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells.
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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.
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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.
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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.
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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.
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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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Amount of the cost of borrowed funds accounted for as interest expense.
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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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Amount of Net Income (Loss) attributable to noncontrolling interest.
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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
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The net result for the period of deducting operating expenses from operating revenues.
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The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.
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| - Definition
Amount of income (expense) related to nonoperating activities, classified as other.
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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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Production (lifting) costs from oil and gas producing activities, including but not limited to lease operating expense, production and ad valorem taxes, and transportation expense.
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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
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