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Acquisitions and Divestitures (Schedule of Net Acquisitions & (Divestitures)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Acquisitions and Divestitures [Line Items]
Acquisitions	$ 2,537	$ 205	$ 277
Divestitures	(1,927)	(7)	(772)
Net Acquisitions and Divestitures	610	198	(495)
Operating Segments [Member] | USA Operations [Member]
Acquisitions and Divestitures [Line Items]
Acquisitions	260	200	271
Divestitures	(1,923)	(7)	(771)
Operating Segments [Member] | Canadian Operations [Member]
Acquisitions and Divestitures [Line Items]
Acquisitions	2,277	5	6
Divestitures	$ (4)	$ 0	$ (1)

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Payments for acquisitions including properties with development, seismic purchases, water rights and purchases with natural gas, oil and natural gas liquids potential.

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The net cash outflow or inflow from purchases, sales and disposals of property, plant and equipment and other productive assets, including intangibles.

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