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Property, Plant and Equipment, Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Internal Costs Capitalized	$ 151	$ 181
Impairments	920	450
Operating Segments [Member] | Canadian Operations [Member]
Property, Plant and Equipment [Line Items]
Impairments	871	450	$ 0
Operating Segments [Member] | USA Operations [Member]
Property, Plant and Equipment [Line Items]
Impairments	$ 49	$ 0	$ 0

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- Definition

Internal costs capitalized in property, plant and equipment related to exploration, development and construction activities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
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Amount of impairment for oil and gas properties charged to expense in oil- and gas-producing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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