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Revenues from Contracts with Customers (Tables) | 9 Months Ended
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Sep. 30, 2019
Revenue From Contract With Customer [Abstract] |
Disaggregation of Revenue by Identified Revenue Stream | Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):
| Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2019 |  |  |  | 2018 |  |  |  | 2019 |  |  | 2018 |
Natural gas sales | $ | 284,980 |  |  | $ | 390,656 |  |  | $ | 1,063,323 |  | $ | 1,182,580 |
NGLs sales |  | 143,195 |  |  |  | 278,563 |  |  |  | 508,035 |  |  | 705,793 |
Oil sales |  | 46,579 |  |  |  | 67,212 |  |  |  | 138,629 |  |  | 206,077 |
Total natural gas, NGLs and oil sales |  | 474,754 |  |  |  | 736,431 |  |  |  | 1,709,987 |  |  | 2,094,450 |
Sales of purchased natural gas |  | 70,404 |  |  |  | 105,840 |  |  |  | 293,209 |  |  | 255,134 |
Sales of purchased NGLs |  | (183 | ) |  |  | (154 | ) |  |  | 1,425 |  |  | 879 |
Other marketing revenue |  | 2,794 |  |  |  | 3,699 |  |  |  | 9,200 |  |  | 11,435 |
Total | $ | 547,769 |  |  | $ | 845,816 |  |  | $ | 2,013,821 |  | $ | 2,361,898 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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