| **Acquisitions and Divestitures - Narrative (Details) $ in Millions**                                                             |            |         |            |            |         |         |           |         |            | 1 Months Ended | 3 Months Ended | 9 Months Ended |            |           |         |           |         |
|-----------------------------------------------------------------------------------------------------------------------------------|------------|---------|------------|------------|---------|---------|-----------|---------|------------|----------------|----------------|----------------|------------|-----------|---------|-----------|---------|
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| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Asset Impairments                                                                                                                 |       |    |       |       |    |    |      |    |       |           |           |           | $ 0.0      |      |    | $ 0.0     | $ 168.0 | $ 0.0 |   |   |   |   |   |   |   |   |
| Proceeds from divestiture                                                                                                         |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      | 182.0   | 129.0 |   |   |   |   |   |   |   |   |
| Gain (loss) on divestiture                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           | $ 193.0    |      |    | $ 0.0     | 859.0   | 0.0 |   |   |   |   |   |   |   |   |
| Proceeds from Sale of 7.5% Interest in Tamar Field                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      | 484.0   | 0.0 |   |   |   |   |   |   |   |   |
| Proceeds from sale                                                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      | $ 691.0 | 0.0 |   |   |   |   |   |   |   |   |
| Equity owned (units) | shares                                                                                                     |       |    |       |       |    |    |      |    |       |           | 0              |           | 0          |      |    |      | 0       |   |   |   |   |   |   |   |   | 21,692,198 |
| Consideration                                                                                                                     |       |    |       |       |    |    |      |    | $ 2,488.0  |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Cash consideration                                                                                                                |       |    |       |       |    |    |      |    | 637.0      |           |           |           |       |      |    |      | $ 0.0   | 616.0 |   |   |   |   |   |   |   |   |
| Intangible assets                                                                                                                 |       |    |       |       |    |    |      |    |       |           | $ 318.0        |           | $ 318.0    |      |    |      | 318.0   |   |   |   |   |   | $ 0.0 |   |   |   |
| Goodwill                                                                                                                          |       |    |       |       |    |    |      |    | 1,291.0    |           | $ 1,401.0      |           | 1,401.0    |      |    |      | 1,401.0 |   |   |   |   |   | $ 1,310.0 |   |   |   |
| Undeveloped Leasehold Costs                                                                                                       |       |    |       |       |    |    |      |    | 1,571.0    |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Fair value of common stock issued                                                                                                 |       |    |       |       |    |    |      |    | 1,851.0    |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Long-Term Debt                                                                                                                    |       |    |       |       |    |    |      |    | 595.0      |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on disposition                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      | $ 0.0   | (2,326.0) |   |   |   |   |   |   |   |   |
| Natural gas production per day | MMcf / d                                                                                         |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 393       |    |   |   |   |   |   |   |   |   |   |
| CONE Gathering LLC                                                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Proceeds from divestiture                                                                                                         |       |    |       |       |    |    |      |    |       |           |           | $ 308.0        | 248.0      | $ 135.0   |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on divestiture                                                                                                        |       |    |       |       |    |    |      |    |       |           |           | $ 196.0        | $ 198.0    | $ 109.0   |    |      |    |   |   |   |   |   |   |   |   |   |
| Shares sold (in shares) | shares                                                                                                  |       |    |       |       |    |    |      |    |       |           |           |           | 14,200,000 | 7,500,000 |    |      |    |   |   |   |   |   |   |   |   |   |
| Ownership                                                                                                                         |       |    |       |       |    | 50.00%  |      |    |       |           | 22.30%         | 50.00%         | 22.30%     |      |    |      | 22.30%  |   |   | 34.10% |   |   |   |   |   |   |
| Greeley Crescent Assets                                                                                                           |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Proceeds from divestiture                                                                                                         |       |    |       |       |    |    |      |    |       |           | $ 64.0         |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on divestiture                                                                                                        |       |    |       |       |    |    |      |    |       |           | 0.0            |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Marcellus Shale                                                                                                                   |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Total transaction value                                                                                                           |       |    |       |       |    |    | $ 1,200.0 |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Proceeds from Divestitures                                                                                                        |       |    |       |       |    |    | 1,000.0   |    |       |           |           |           |       |      |    |      | $ 0.0   | $ 1,028.0 |   |   |   |   |   |   |   |   |
| Adjustment to consideration                                                                                                       |       |    |       |       |    |    | 100.0     |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Adjustment to consideration, individual payment amounts                                                                           |       |    |       |       |    |    | $ 33.3    |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Minimum index price for contingent payments to be required (in usd per unit) | $ / MMBTU                                          |       |    |       |       |    |    | 3.30      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on disposition                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | $ 2,300.0 |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on sale                                                                                                               |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 1,500.0   |    |   |   |   |   |   |   |   |   |   |
| Assets                                                                                                                            |       |    |       |       |    |    | $ 3,400.0 |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Exit costs                                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | $ 41.0    |    |   |   |   |   |   |   |   |   |   |
| Period increase (decrease) | MMBoe                                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 241       |    |   |   |   |   |   |   |   |   |   |
| Proved developed reserves | MMBoe                                                                                                 |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 190       |    | 190 |   |   |   |   |   |   |   |   |
| Proved undeveloped reserves | MMBoe                                                                                               |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 51        |    | 51 |   |   |   |   |   |   |   |   |
| Saddle Butte                                                                                                                      |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Consideration                                                                                                                     |       |    |       |       |    | $ 681.0 |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Cash consideration                                                                                                                |       |    |       |       |    | 663.0   |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Liabilities assumed                                                                                                               |       |    |       |       |    | 18.0    |      |    |       |           |           | $ 18.0         |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Property, plant and equipment                                                                                                     |       |    |       |       |    |    |      |    |       |           | 206.0          |           | $ 206.0    |      |    |      | 206.0   |   |   |   |   |   |   |   |   |   |
| Intangible assets                                                                                                                 |       |    |       |       |    |    |      |    |       |           | 340.0          |           | 340.0      |      |    |      | 340.0   |   |   |   |   |   |   |   |   |   |
| Goodwill                                                                                                                          |       |    |       |       |    |    |      |    |       |           | $ 110.0        |           | $ 110.0    |      |    |      | $ 110.0 |   |   |   |   |   |   |   |   |   |
| Clayton Williams Energy                                                                                                           |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Consideration                                                                                                                     |       |    |       |       |    |    |      |    | 2,500.0    |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Cash consideration                                                                                                                |       |    |       |       |    |    |      |    | 637.0      |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Goodwill                                                                                                                          |       |    |       |       |    |    |      |    | $ 1,300.0  |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Shares exchange in acquisition (shares) | shares                                                                                  |       |    |       |       |    |    |      |    | 56,000,000 |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Fair value of common stock issued                                                                                                 |       |    |       |       |    |    |      |    | $ 1,900.0  |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Long-Term Debt                                                                                                                    |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | $ 595.0   |    | $ 595.0 |   |   |   |   |   |   |   |   |
| Bolt-on acquisition in the Delaware Basin                                                                                         |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Payments to acquire oil and gas properties                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    | 301.0 |   |   |   |   |   |   |   |   |
| Undeveloped Leasehold Costs                                                                                                       |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | $ 246.0   |    | $ 246.0 |   |   |   |   |   |   |   |   |
| Productive oil wells | well                                                                                                       |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 7         |    | 7 |   |   |   |   |   |   |   |   |
| Number of productive wells | well                                                                                                 |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    | 4         |    | 4 |   |   |   |   |   |   |   |   |
| Noble Midstream Partners LP | Blanco River DevCo                                                                                  |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Percentage acquired                                                                                                               |       |    |       |       |    |    |      | 15.00%  |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Step acquisition, percentage acquired                                                                                             |       |    |       |       |    |    |      | 40.00%  |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Noble Midstream Partners LP | Colorado River DevCo                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Consideration                                                                                                                     |       |    |       |       |    |    |      | $ 270.0 |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Percentage acquired                                                                                                               |       |    |       |       |    |    |      | 20.00%  |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Tamar and Dalit Fields                                                                                                            |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Ownership interest                                                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   | 25.00% | 32.50% |   |   |   |   |
| CNX Midstream Partners                                                                                                            |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Equity owned (units) | shares                                                                                                     |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   | 21,700,000 |   |   |   |   |   |   |
| Advantage Joint Venture                                                                                                           |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Payments to acquire interest                                                                                                      |       |    |       |       |    |    |      |    |       | $ 66.5         |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Disposal Group, Disposed of by Sale, Not Discontinued Operations | Tamar and Dalit Fields                                         |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on divestiture                                                                                                        |       |    |       | $ 376.0    |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Estimated capacity                                                                                                                |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   | 502 | 84 |   |
| Percentage ownership sold                                                                                                         |       |    |       | 7.50%      |    |    |      |    |       |           | 7.50%          |           | 7.50%      |      |    |      | 7.50%   |   |   |   |   |   |   |   |   |   |
| Shares received in divestiture (in shares) | shares                                                                               |       |    |       | 38,500,000 |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Value of shares issued                                                                                                            |       |    |       | $ 224.0    |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain attributable to change in fair value                                                                                         |       |    |       | $ 190.0    |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Discount percent                                                                                                                  |       |    |       | 15.00%     |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Loss from change in fair value                                                                                                    |       |    |       |       |    |    |      |    |       |           |           |           | $ 15.0     |      |    |      | $ 25.0  |   |   |   |   |   |   |   |   |   |
| Tax effect                                                                                                                        |       |    |       | $ 86.0     |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Disposal Group, Disposed of by Sale, Not Discontinued Operations | Southwest Royalties                                            |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Proceeds from sale                                                                                                                |       |    |       |       |    |    |      |    |       |           |           | $ 60.0         |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Disposal Group, Disposed of by Sale, Not Discontinued Operations | Other Divestitures                                             |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Total transaction value                                                                                                           |       |    |       |       |    |    |      |    |       |           | $ 58.0         |           | 58.0       |      |    |      | 58.0    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on divestiture                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      | 4.0     |   |   |   |   |   |   |   |   |   |
| Disposal Group, Disposed of by Sale, Not Discontinued Operations | Gulf of Mexico Assets                                          |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Total transaction value                                                                                                           |       |    |       |       | $ 480.0 |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Asset Impairments                                                                                                                 |       |    |       |       |    |    |      |    |       |           |           |           |       |      | $ 168.0 |      | $ 168.0 |   |   |   |   |   |   |   |   |   |
| Proceeds from divestiture                                                                                                         |       |    |       |       |    |    |      |    |       |           |           |           | 383.0      |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gain (loss) on divestiture                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           | $ (24.0)   |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Contingent consideration                                                                                                          |       |    |       |       | $ 100.0 |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Contingent consideration basis, price per barrel (in usd per barrel) | $ / bbl                                                    |       |    |       |       | 2       |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Price benchmark (in usd per barrel) | $ / bbl                                                                                     |       |    |       |       | 63      |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Estimated capacity | MMBoe                                                                                                        |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   | 23 |   |   |   |   |   |   |   |
| Greenfield Midstream | Saddle Butte                                                                                               |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Cash consideration                                                                                                                |       |    |       |       |    | $ 343.0 |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Leaseholds and Leasehold Improvements | Marcellus Shale                                                                           |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Assets                                                                                                                            |       |    |       |       |    |    | $ 883.0   |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Corporate Joint Venture | Advantage Pipeline                                                                                      |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Ownership                                                                                                                         |       |    |       |       |    |    |      |    |       | 5000.00%       |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Consideration                                                                                                                     |       |    |       |       |    |    |      |    |       | $ 133.0        |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Subsidiaries | Blanco River And Colorado River DevCos                                                                             |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Consideration                                                                                                                     |       |    |       |       |    |    |      | $ 270.0 |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Cash consideration                                                                                                                |       |    |       |       |    |    |      | $ 245.0 |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Shares exchange in acquisition (shares) | shares                                                                                  |       |    |       |       |    |    |      | 562,430 |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Gas and oil area developed | a                                                                                                    |       |    |       |       |    |    |      | 111,000 |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Proceeds from issuance                                                                                                            |       |    |       |       |    |    |      | $ 138.0 |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Proceeds from Noble Midstream Services Revolving Credit Facility                                                                  |       |    |       |       |    |    |      | $ 90.0  |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Subsequent Event | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Tamar and Dalit Fields                      |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |       |    |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Shares sold (in shares) | shares                                                                                                  | 16,600,000 |    | 21,900,000 |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |
| Pre-tax proceeds from sale                                                                                                        |       | $ 163.0 |       |       |    |    |      |    |       |           |           |           |       |      |    |      |    |   |   |   |   |   |   |   |   |   |

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Disposal Group, Including Discontinued Operations, Contingent Consideration, Asset Basis, Price Per Barrel
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Gain (Loss) On Divestiture Of Equity Method Investments, Change In Fair Value
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Investment Owned, Balance, Shares Sold
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Shares Received in Divestiture of Interest in Equity Method Investment
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| - Definition
Energy measure of increase (decrease) of quantity of proved reserve of oil and gas, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).
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| - Definition
Energy measure of interests in proved developed reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.
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| - Definition
Energy measure of proved undeveloped reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.
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| - Definition
Amount classified as assets attributable to disposal group held for sale or disposed of.
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| - Definition
Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.
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Number of shares of equity interests issued or issuable to acquire entity.
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| - Definition
Percentage of voting equity interests acquired at the acquisition date in the business combination.
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| - Definition
Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
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| - Definition
Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.
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| - Definition
The amount of identifiable intangible assets recognized as of the acquisition date.
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Amount of liabilities assumed at the acquisition date.
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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.
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The amount of property, plant, and equipment recognized as of the acquisition date.
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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.
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| - Definition
Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.
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| - Definition
Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
+ References
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| - Definition
Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.
+ References
No definition available.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the amount of gain (loss) on sale of properties during the reporting period net of the applicable income taxes realized.
+ References
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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.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Area spaced or assigned to productive wells in which a working interest is owned.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.
+ References
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Balance held at close of period in number of shares.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.
+ References
No definition available.
+ Details**Name:**us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners**Namespace Prefix:**us-gaap_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**instant |
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The net cash outflow or inflow associated with the acquisition or sale of a business segment during the period.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The net cash paid (received) associated with the acquisition or disposal of all investments, including securities and other assets.
+ 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
Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
+ 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
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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The total number of producing oil wells and oil wells capable of production, in which the entity owns an undivided working interest.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The total number of producing oil wells and oil wells capable of production, in which the entity owns a fractional working interest.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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