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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Revenues and other: |  |  |  |
Natural gas and oil derivatives | $ 106 | $ (1,029) | $ 1,195 | $ (3,668)
Gains (losses) on sales of assets | 0 | (2) | 807 | 298
Total revenues and other | 1,512 | 3,162 | 6,773 | 7,617
Operating expenses: |  |  |  |
Production | 73 | 121 | 293 | 349
Gathering, processing and transportation | 192 | 286 | 663 | 802
Severance and ad valorem taxes | 27 | 67 | 136 | 187
Exploration | 4 | 2 | 19 | 14
General and administrative | 29 | 40 | 95 | 102
Separation and other termination costs | 0 | 0 | 3 | 0
Depreciation, depletion and amortization | 382 | 440 | 1,148 | 1,300
Other operating expense, net | 3 | 1 | 15 | 32
Total operating expenses | 1,433 | 2,157 | 4,357 | 6,065
Income from operations | 79 | 1,005 | 2,416 | 1,552
Other income (expense): |  |  |  |
Interest expense | (23) | (52) | (82) | (120)
Other income | 15 | 4 | 48 | 29
Total other expense | (8) | (48) | (34) | (91)
Income before income taxes | 71 | 957 | 2,382 | 1,461
Income tax expense | 1 | 74 | 532 | 105
Net income, basic | 70 | 883 | 1,850 | 1,356
Net income, diluted | $ 70 | $ 883 | $ 1,850 | $ 1,356
Earnings per common share: |  |  |  |
Basic (in dollars per share) | $ 0.53 | $ 7.29 | $ 13.86 | $ 11.03
Diluted (in dollars per share) | $ 0.49 | $ 6.12 | $ 12.90 | $ 9.35
Weighted average common shares outstanding (in thousands): |  |  |  |
Basic (in shares) | 132,153 | 121,150 | 133,460 | 122,924
Diluted (in shares) | 142,348 | 144,390 | 143,463 | 145,031
Natural gas, oil and NGL |  |  |  |
Revenues and other: |  |  |  |
Revenue | $ 682 | $ 2,987 | $ 2,784 | $ 7,691
Marketing |  |  |  |
Revenues and other: |  |  |  |
Revenue | 724 | 1,206 | 1,987 | 3,296
Operating expenses: |  |  |  |
Marketing | $ 723 | $ 1,200 | $ 1,985 | $ 3,279

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