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REVENUE RECOGNITION (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Schedule of disaggregated revenue | The following table provides disaggregated revenue from contracts with customers:
| Successor |  |  | Predecessor
| November 1, 2020 - December 31, 2020 |  |  | January 1, 2020 - October 31, 2020 |  | Years ended December 31,
(in millions) |  |  |  | 2019 |  | 2018
Oil and natural gas sales |  |  |  |  |  |  |  |
Oil | $ | 176 |  |  |  | $ | 874 |  |  | $ | 1,884 |  |  | $ | 2,110 |
NGLs | 29 |  |  |  | 106 |  |  | 179 |  |  | 260 |
Natural gas | 32 |  |  |  | 112 |  |  | 207 |  |  | 220 |
| 237 |  |  |  | 1,092 |  |  | 2,270 |  |  | 2,590 |
Electricity sales | 15 |  |  |  | 86 |  |  | 112 |  |  | 111 |
Trading revenue | 38 |  |  |  | 124 |  |  | 286 |  |  | 330 |
Other revenue | 3 |  |  |  | 14 |  |  | 25 |  |  | 32 |
| 56 |  |  |  | 224 |  |  | 423 |  |  | 473 |
Net derivative (loss) gain from commodity contracts | (141) |  |  |  | 91 |  |  | (59) |  |  | 1 |
Total revenues | $ | 152 |  |  |  | $ | 1,407 |  |  | $ | 2,634 |  |  | $ | 3,064 |

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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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