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Revenues from Contracts with Customers (Tables) | 12 Months Ended
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Dec. 31, 2020
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):
|  | Year Ended December 31, |
|  |  | 2020 |  |  | 2019 |  |  |  | 2018 |
Natural gas sales |  | $ | 943,740 |  | $ | 1,388,838 |  |  | $ | 1,663,832 |
NGLs sales |  |  | 578,454 |  |  | 681,134 |  |  |  | 931,360 |
Oil sales |  |  | 85,519 |  |  | 185,453 |  |  |  | 255,885 |
Total natural gas, NGLs and oil sales |  |  | 1,607,713 |  |  | 2,255,425 |  |  |  | 2,851,077 |
Sales of purchased natural gas |  |  | 160,122 |  |  | 332,006 |  |  |  | 459,634 |
Sales of purchased NGLs |  |  | 3,776 |  |  | 1,661 |  |  |  | 9,017 |
Other marketing revenue |  |  | 9,375 |  |  | 11,842 |  |  |  | 14,109 |
Total |  | $ | 1,780,986 |  | $ | 2,600,934 |  |  | $ | 3,333,837 |

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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=121604090&loc=SL49130545-203045 + Details
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