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Property, Plant and Equipment (Summary of Property and Equipment, net) (Details) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Property and equipment:
Proved		$ 45,518	$ 42,734
Unproved and properties under development		1,594	1,548
Total oil and gas		47,112	44,282
Less accumulated DD&A		(29,549)	(27,715)
Oil and gas property and equipment, net		17,563	16,567
Other property and equipment		2,244	2,280
Less accumulated DD&A		(776)	(741)
Other property and equipment, net	[1]	1,468	1,539
Total property and equipment, net		$ 19,031	$ 18,106
[1] $124 million and $109 million related to CDM in 2023 and 2022, respectively.

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Amount of accumulated depreciation, depletion and amortization of oil and gas property carried under the successful effort method. Oil and gas property include, but not limited to, the entity's wells and related equipment and facilities.

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