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Supplementary Information (Non-Cash Activity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Non-Cash Operating Activities
ROU operating lease assets and liabilities	$ (454)	$ (46)	$ (113)
Non-Cash Investing Activities
Asset retirement obligation incurred	7	9	6
Asset retirement obligation change in estimated future cash outflows	(68)	64	13
Property, plant and equipment accruals	12	(34)	26
Capitalized long-term incentives	(5)	(8)	(3)
Property additions/dispositions, including swaps	72	122	29
Non-Cash Financing Activities
Property acquisition payable (See Notes 8, 13)	123	0	0
Shares of common stock issued in conjunction with the Permian Acquisition (See Note 9)	$ 0	$ 0	$ (1,169)

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