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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 | 6 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Share-based compensation expense | $ 53 | $ 51
Related income tax benefit | 8 | 18
G&A [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Share-based compensation expense | 46 | 50
Exploration Expenses [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Share-based compensation expense | 0 | 1
Restructuring and Transaction Costs [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Share-based compensation expense | $ 7 | $ 0

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