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Supplemental Information on Oil and Gas Operations (Unaudited) (Results Of Operations) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) $ / Boe | Dec. 31, 2021 USD ($) $ / Boe | Dec. 31, 2020 USD ($) $ / Boe
Oil and Gas Exploration and Production Industries Disclosures [Abstract] |  |  |
Oil, gas and NGL sales | $ 14,082 | $ 9,531 | $ 2,695
Production expenses | (2,797) | (2,131) | (1,123)
Exploration expenses | (29) | (14) | (167)
Depreciation, depletion and amortization | (2,119) | (2,050) | (1,207)
Asset dispositions | 43 | 170 |
Asset impairments |  |  | (2,664)
Accretion of asset retirement obligations | (25) | (28) | (20)
Income tax expense | (2,041) | (1,238) |
Results of operations | $ 7,114 | $ 4,240 | $ (2,486)
Depreciation, depletion and amortization per Boe | $ / Boe | 9.52 | 9.83 | 9.90

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- Definition Amount of gain (loss) on sale or disposal of proven and unproven oil and gas properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition Accretion expense of asset retirement obligations related to oil and gas producing activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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