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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
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award Line Items
Share-based compensation expense	$ 93	$ 88	$ 99
Related income tax benefit	34	34	13
G&A [Member]
Share Based Compensation Arrangement By Share Based Payment Award Line Items
Share-based compensation expense	92	87	77
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	$ 0	$ 21

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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