| **Consolidated Statements of Cash Flows - USD ($) $ in Millions**                               | 12 Months Ended |
|-------------------------------------------------------------------------------------------------|-----------------|
||
| **Cash Flows From Operating Activities**                                                        |            |   |   |
| Net Loss Including Noncontrolling Interests                                                     | $ (1,050)       | $ (985) | $ (2,441) |
| **Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities**              |            |   |   |
| Depreciation, Depletion and Amortization                                                        | 2,053           | 2,454 | 2,131 |
| Asset Impairments                                                                               | 70              | 92 | 533 |
| Loss on Marcellus Shale Upstream Divestiture                                                    | 2,379           | 0 | 0 |
| Goodwill Impairment                                                                             | 0               | 0 | 779 |
| Dry Hole Cost                                                                                   | 9               | 579 | 266 |
| Deferred Income Taxes                                                                           | (1,227)         | (984) | 116 |
| (Gain) Loss on Commodity Derivative Instruments                                                 | (63)            | 139 | (501) |
| Net Cash Received in Settlement of Commodity Derivative Instruments                             | 13              | 569 | 1,009 |
| Gain on Divestitures                                                                            | (326)           | (238) | 0 |
| Stock Based Compensation                                                                        | 104             | 77 | 86 |
| Non-cash Pension Plan Termination Expense                                                       | 0               | 0 | 82 |
| Loss (Gain) on Debt Extinguishment                                                              | 98              | (80) | 0 |
| Undeveloped Leasehold Impairment                                                                | 62              | 93 | 21 |
| Expiration and Amortization of Undeveloped Leaseholds                                           | 0               | 55 | 92 |
| Other Adjustments for Noncash Items Included in Income                                          | (21)            | 40 | 18 |
| **Changes in Operating Assets and Liabilities, Net of Assets Acquired and Liabilities Assumed** |            |   |   |
| (Increase) Decrease in Accounts Receivable                                                      | (171)           | (164) | 453 |
| Increase (Decrease) in Accounts Payable                                                         | 248             | (111) | (364) |
| (Decrease) Increase in Current Income Taxes Payable                                             | (36)            | (32) | (94) |
| (Decrease) Increase in Other Current Liabilities                                                | (101)           | (63) | (70) |
| Other Operating Assets and Liabilities, Net                                                     | (90)            | (90) | (54) |
| Net Cash Provided by Operating Activities                                                       | 1,951           | 1,351 | 2,062 |
| **Cash Flows From Investing Activities**                                                        |            |   |   |
| Additions to Property, Plant and Equipment                                                      | (2,649)         | (1,541) | (2,979) |
| Proceeds from Divestitures                                                                      | 2,073           | 1,241 | 151 |
| Clayton Williams Energy Acquisition, Net of Cash Received                                       | (616)           | 0 | 0 |
| Other Acquisitions                                                                              | (327)           | 0 | 0 |
| Marcellus Shale Acreage Exchange Consideration                                                  | 0               | (213) | 0 |
| Other                                                                                           | (87)            | 82 | (43) |
| Net Cash Used in Investing Activities                                                           | (1,606)         | (431) | (2,871) |
| **Cash Flows From Financing Activities**                                                        |            |   |   |
| Dividends Paid, Common Stock                                                                    | (190)           | (172) | (291) |
| Proceeds from Issuance of Noble Energy Common Stock, Net of Offering Costs                      | 0               | 0 | 1,112 |
| Proceeds from Revolving Credit Facility                                                         | 1,585           | 0 | 0 |
| Repayment of Revolving Credit Facility                                                          | (1,355)         | 0 | (70) |
| Repayment of Clayton Williams Energy Long-term Debt                                             | (595)           | 0 | 0 |
| Proceeds from Term Loan Facility                                                                | 0               | 1,400 | 0 |
| Repayment of Term Loan Facility                                                                 | (550)           | (850) | 0 |
| Proceeds from Issuance of Senior Notes, Net                                                     | 1,086           | 0 | 0 |
| Repayment of Senior Notes                                                                       | (1,114)         | (1,383) | (12) |
| Proceeds from Noble Midstream Services Revolving Credit Facility                                | 325             | 0 | 0 |
| Repayment of Noble Midstream Services Revolving Credit Facility                                 | (240)           | 0 | 0 |
| Proceeds from Issuance of Noble Midstream Partners Common Units, Net of Offering Costs          | 312             | 299 | 0 |
| Other                                                                                           | (114)           | (62) | (85) |
| Net Cash (Used in) Provided By Financing Activities                                             | (850)           | (768) | 654 |
| (Decrease) Increase in Cash and Cash Equivalents                                                | (505)           | 152 | (155) |
| Cash and Cash Equivalents at Beginning of Period                                                | 1,180           | 1,028 | 1,183 |
| Cash and Cash Equivalents at End of Period                                                      | $ 675           | $ 1,180 | $ 1,028 |

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The cash received (paid) on derivative instruments not designated or qualifying as hedging instruments as a result of settlement of derivative instruments during the period.
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Deferred Losses Reclassified
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Expiration and Amortization of Unproved Leases
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Payments For Acreage Exchange
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| - Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.
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| - Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
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| - Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.
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| - Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
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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
The adjustment to expense previously capitalized costs of drilling exploratory wells when proved reserves are not found or when the entity obtains information that raises substantial doubt about the economic or operational viability of the project.
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| - Definition
Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.
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Amount of gain (loss) on sale or disposal of proven and unproven oil and gas properties.
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| - Definition
Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.
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| - Definition
Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.
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| - Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
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| - Definition
The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.
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The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.
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| - Definition
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.
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The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.
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The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.
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Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.
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Amount of increase (decrease) in operating liabilities classified as other.
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| - Definition
Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
+ References
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| - Definition
Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
+ References
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| - References
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| - Definition
Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
+ References
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| - References
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| - Definition
Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.
+ References
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| - Definition
The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash (inflow) outflow from investing activities classified as other.
+ References
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| - Definition
Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
+ References
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| - Definition
The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.
+ References
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| - Definition
The cash outflow to purchase long lived physical asset for use in the normal oil and gas operations and to purchase mineral interests in oil and gas properties not intended for resale.
+ References
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| - Definition
The cash inflow from the issuance of common limited partners units during the period.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral.
+ References
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| - Definition
The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.
+ References
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| - Definition
The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.
+ References
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| - Definition
Amount of cash inflow (outflow) from financing activities classified as other.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.
+ References
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| - Definition
The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.
+ References
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| - Definition
The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral.
+ References
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