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Condensed Combined Debtor-in-Possession Financial Information - Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Gains (losses) on sales of assets |  |  |  |  |  |  |  |  | $ 30 | $ 43 | $ (264)
Total revenues | $ 1,259 | $ 975 | $ 521 | $ 2,541 | $ 1,926 | $ 2,087 | $ 2,386 | $ 2,196 | 5,296 | 8,595 | 10,030
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Severance and ad valorem taxes |  |  |  |  |  |  |  |  | 149 | 224 | 189
General and administrative |  |  |  |  |  |  |  |  | 267 | 315 | 335
Separation and other termination costs |  |  |  |  |  |  |  |  | 44 | 12 | 38
Provision for legal contingencies |  |  |  |  |  |  |  |  | 27 | 19 | 26
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 1,097 | 2,264 | 1,737
Impairments |  |  |  | 8,446 |  |  |  |  | 8,535 | 11 | 131
Other operating expense |  |  |  |  |  |  |  |  | 109 | 92 | 0
Total Operating Expenses |  |  |  |  |  |  |  |  | 13,999 | 8,626 | 9,648
INCOME (LOSS) FROM OPERATIONS | $ 176 | $ (111) | $ (541) | $ (8,227) | $ (173) | $ 46 | $ 278 | $ (182) | (8,703) | (31) | 382
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (331) | (651) | (633)
Gains on purchases or exchanges of debt |  |  |  |  |  |  |  |  | 65 | 75 | 263
Other income |  |  |  |  |  |  |  |  | 16 | 39 | 67
Reorganization items, net |  |  |  |  |  |  |  |  | (796) | 0 | 0
Equity in net earnings (losses) of subsidiary |  |  |  |  |  |  |  |  | (20) | (71) | 139
Total Other Expense |  |  |  |  |  |  |  |  | (1,066) | (608) | (164)
INCOME (LOSS) BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | (9,769) | (639) | 218
Total Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | (19) | (331) | (10)
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (9,750) | (308) | 228
Other comprehensive income |  |  |  |  |  |  |  |  | 33 | 35 | 34
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE |  |  |  |  |  |  |  |  | (9,701) | (273) | 260
Oil, Natural Gas and NGL |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 3,341 | 4,522 | 5,155
Oil, natural gas and NGL production |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 373 | 520 | 474
Oil, natural gas and NGL gathering, processing and transportation |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 1,082 | 1,082 | 1,398
Marketing |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 1,869 | 3,967 | 5,076
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 1,889 | 4,003 | 5,158
Oil, Natural gas and NGL and Marketing |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 5,210 | 8,489 | 10,231
Other |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 56 | 63 | 63
Exploration |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 427 | 84 | 162
Debtor-in-Possession |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Gains (losses) on sales of assets |  |  |  |  |  |  |  |  | 30 | 43 | (264)
Total revenues |  |  |  |  |  |  |  |  | 5,289 | 8,581 | 10,011
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Severance and ad valorem taxes |  |  |  |  |  |  |  |  | 149 | 224 | 188
General and administrative |  |  |  |  |  |  |  |  | 266 | 314 | 334
Separation and other termination costs |  |  |  |  |  |  |  |  | 44 | 12 | 38
Provision for legal contingencies |  |  |  |  |  |  |  |  | 27 | 19 | 26
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 1,095 | 2,258 | 1,730
Impairments |  |  |  |  |  |  |  |  | 8,501 | 11 | 131
Other operating expense |  |  |  |  |  |  |  |  | 109 | 92 | 0
Total Operating Expenses |  |  |  |  |  |  |  |  | 13,959 | 8,613 | 9,632
INCOME (LOSS) FROM OPERATIONS |  |  |  |  |  |  |  |  | (8,670) | (32) | 379
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (331) | (651) | (633)
Gains (losses) on investments |  |  |  |  |  |  |  |  | (20) | (71) | 139
Gains on purchases or exchanges of debt |  |  |  |  |  |  |  |  | 65 | 75 | 263
Other income |  |  |  |  |  |  |  |  | 16 | 39 | 67
Reorganization items, net |  |  |  |  |  |  |  |  | (796) | 0 | 0
Equity in net earnings (losses) of subsidiary |  |  |  |  |  |  |  |  | (17) | 1 | 1
Total Other Expense |  |  |  |  |  |  |  |  | (1,083) | (607) | (163)
INCOME (LOSS) BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | (9,753) | (639) | 216
Total Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | (19) | (331) | (10)
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (9,734) | (308) | 226
Other comprehensive income |  |  |  |  |  |  |  |  | 33 | 35 | 34
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE |  |  |  |  |  |  |  |  | (9,701) | (273) | 260
Debtor-in-Possession | Oil, Natural Gas and NGL |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 3,334 | 4,508 | 5,136
Debtor-in-Possession | Oil, natural gas and NGL production |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 373 | 520 | 474
Debtor-in-Possession | Oil, natural gas and NGL gathering, processing and transportation |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 1,079 | 1,076 | 1,391
Debtor-in-Possession | Marketing |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 1,869 | 3,967 | 5,076
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | 1,889 | 4,003 | 5,158
Debtor-in-Possession | Oil, Natural gas and NGL and Marketing |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 5,203 | 8,475 | 10,212
Debtor-in-Possession | Other |  |  |  |  |  |  |  |  |  |  |
REVENUES AND OTHER: |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 56 | 63 | 63
Debtor-in-Possession | Exploration |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |
Cost of goods and services |  |  |  |  |  |  |  |  | $ 427 | $ 84 | $ 162

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