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Revenue Recognition | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Revenue Recognition | Revenue Recognition The following table shows revenue disaggregated by operating area and product type, for the years ended December 31, 2020, 2019 and 2018:
|  | Year Ended December 31, 2020
|  | Oil |  | Natural Gas |  | NGL |  | Total
|  | ($ in millions)
Marcellus |  | $ | — |  |  | $ | 631 |  |  | $ | — |  |  | $ | 631 |
Haynesville |  | — |  |  | 362 |  |  | — |  |  | 362 |
Eagle Ford |  | 717 |  |  | 113 |  |  | 84 |  |  | 914 |
Brazos Valley |  | 485 |  |  | 16 |  |  | 13 |  |  | 514 |
Powder River Basin |  | 170 |  |  | 41 |  |  | 20 |  |  | 231 |
Mid-Continent |  | 55 |  |  | 25 |  |  | 13 |  |  | 93 |
Revenue from contracts with customers |  | 1,427 |  |  | 1,188 |  |  | 130 |  |  | 2,745 |
Gains on oil, natural gas and NGL derivatives |  | 554 |  |  | 42 |  |  | — |  |  | 596 |
Oil, natural gas and NGL revenue |  | $ | 1,981 |  |  | $ | 1,230 |  |  | $ | 130 |  |  | $ | 3,341 |
Marketing revenue from contracts with customers |  | $ | 1,195 |  |  | $ | 494 |  |  | $ | 110 |  |  | $ | 1,799 |
Other marketing revenue |  | 67 |  |  | 3 |  |  | — |  |  | 70 |
Marketing revenue |  | $ | 1,262 |  |  | $ | 497 |  |  | $ | 110 |  |  | $ | 1,869 |
|  | Year Ended December 31, 2019
|  | Oil |  | Natural Gas |  | NGL |  | Total
|  | ($ in millions)
Marcellus |  | $ | — |  |  | $ | 856 |  |  | $ | — |  |  | $ | 856 |
Haynesville |  | — |  |  | 620 |  |  | — |  |  | 620 |
Eagle Ford |  | 1,289 |  |  | 153 |  |  | 119 |  |  | 1,561 |
Brazos Valley |  | 721 |  |  | 32 |  |  | 16 |  |  | 769 |
Powder River Basin |  | 369 |  |  | 77 |  |  | 32 |  |  | 478 |
Mid-Continent |  | 164 |  |  | 44 |  |  | 25 |  |  | 233 |
Revenue from contracts with customers |  | 2,543 |  |  | 1,782 |  |  | 192 |  |  | 4,517 |
Gains (losses) on oil, natural gas and NGL derivatives |  | (212) |  |  | 217 |  |  | — |  |  | 5 |
Oil, natural gas and NGL revenue |  | $ | 2,331 |  |  | $ | 1,999 |  |  | $ | 192 |  |  | $ | 4,522 |
Marketing revenue from contracts with customers |  | $ | 2,473 |  |  | $ | 900 |  |  | $ | 246 |  |  | $ | 3,619 |
Other marketing revenue |  | 311 |  |  | 41 |  |  | — |  |  | 352 |
Losses on marketing derivatives |  | — |  |  | (4) |  |  | — |  |  | (4) |
Marketing revenue |  | $ | 2,784 |  |  | $ | 937 |  |  | $ | 246 |  |  | $ | 3,967 |
|  | Year Ended December 31, 2018
|  | Oil |  | Natural Gas |  | NGL |  | Total
|  | ($ in millions)
Marcellus |  | $ | — |  |  | $ | 924 |  |  | $ | — |  |  | $ | 924 |
Haynesville |  | 2 |  |  | 836 |  |  | — |  |  | 838 |
Eagle Ford |  | 1,514 |  |  | 173 |  |  | 185 |  |  | 1,872 |
Powder River Basin |  | 244 |  |  | 68 |  |  | 38 |  |  | 350 |
Mid-Continent |  | 246 |  |  | 84 |  |  | 55 |  |  | 385 |
Utica |  | 195 |  |  | 401 |  |  | 224 |  |  | 820 |
Revenue from contracts with customers |  | 2,201 |  |  | 2,486 |  |  | 502 |  |  | 5,189 |
Gains (losses) on oil, natural gas and NGL derivatives |  | 124 |  |  | (147) |  |  | (11) |  |  | (34) |
Oil, natural gas and NGL revenue |  | $ | 2,325 |  |  | $ | 2,339 |  |  | $ | 491 |  |  | $ | 5,155 |
Marketing revenue from contracts with customers |  | $ | 2,740 |  |  | $ | 1,194 |  |  | $ | 456 |  |  | $ | 4,390 |
Other marketing revenue |  | 457 |  |  | 222 |  |  | — |  |  | 679 |
Gains on marketing derivatives |  | — |  |  | 7 |  |  | — |  |  | 7 |
Marketing revenue |  | $ | 3,197 |  |  | $ | 1,423 |  |  | $ | 456 |  |  | $ | 5,076 |
Accounts Receivable Accounts receivable as of December 31, 2020 and 2019 are detailed below:
|  | December 31,
|  | 2020 |  | 2019
|  | ($ in millions)
Oil, natural gas and NGL sales |  | $ | 589 |  |  | $ | 737 |
Joint interest billings |  | 119 |  |  | 200 |
Other |  | 68 |  |  | 74 |
Allowance for doubtful accounts |  | (30) |  |  | (21) |
Total accounts receivable, net |  | $ | 746 |  |  | $ | 990 |

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 + Details
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