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Share-Based Compensation (Schedule of Share-Based Compensation Expense Included In The Consolidated Statements Of Comprehensive Earnings) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award Line Items |  |  |
Share-based compensation expense | $ 88 | $ 99 | $ 88
Related income tax benefit | 34 | 13 | 0
G&A [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Line Items |  |  |
Share-based compensation expense | 87 | 77 | 76
Exploration Expenses [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Line Items |  |  |
Share-based compensation expense | 1 | 1 | 1
Restructuring and Transaction Costs [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Line Items |  |  |
Restructuring and transaction costs | $ 0 | $ 21 | $ 11

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost. + References No definition available. + Details
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