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Accounts Receivable (Schedule Of Components Of Accounts Receivable) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Joint interest billings	$ 341	$ 251
Other	42	22
Gross accounts receivable	1,978	1,580
Allowance for doubtful accounts	(6)	(7)
Net accounts receivable	1,972	1,573
Oil, Gas and NGL Sales [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	1,130	965
Marketing and Midstream Revenues [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	$ 465	$ 342

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