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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets [Abstract] |  |  |
Proved oil and gas properties carrying amount | $ 146 | $ 27 | $ 1,587
Assets written down during the period - fair value at end of period | 26 | 7 | 319
Pretax impairment charges | 120 | 20 | 1,268
Pretax impairment charge for a commodity price-related write-down |  |  | $ 72
Debt Disclosure [Abstract] |  |  |
Aggregate principal amount of current and long-term debt | 4,890 | 4,890 |
Estimated fair value of debt | $ 4,740 | $ 5,577 |

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- Definition The expense recorded to reduce the value of property, plant and equipment to estimated fair value when circumstances indicate such property, plant and equipment has been impaired and to reduce the value of oil and gas assets consisting of proved properties as the estimate of future successful production from these properties is reduced. + References No definition available. + Details
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- Definition Pretax impairment charge for a commodity price-related write-down of other assets + References No definition available. + Details
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- Definition Net dollar amount capitalized on balance sheet representing an enterprise's interests in proved crude oil (including condensate and natural gas liquids) and/or natural gas properties. + References No definition available. + Details
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- Definition Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets [Abstract] + References No definition available. + Details
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- Definition Fair value of proved oil and gas property and other property, plant and equipment as of the balance sheet date. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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