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Subsequent Events (Narrative) (Details) shares in Millions, $ in Millions, $ in Millions					12 Months Ended
	Feb. 17, 2026 USD ($)	Feb. 03, 2026 USD ($) shares	Feb. 03, 2026 CAD ($) shares	Nov. 04, 2025 shares	Dec. 31, 2025 USD ($) shares	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Feb. 03, 2026 CAD ($)
Subsequent Event [Line Items]
Proceeds from divestitures | $					$ 1,927	$ 163	$ 772
Subsequent Event [Member] | Anadarko Assets [Member]
Subsequent Event [Line Items]
Proceeds from divestitures | $	$ 3,000
Common Stock [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of shares issued		30.1	30.1
NuVista Energy Ltd [Member]
Subsequent Event [Line Items]
Purchase of common stock, shares					18.5
NuVista Energy Ltd [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Total Consideration		$ 2,800	$ 3,800
Cash paid for acquisition		1,200	$ 1,600
Business acquisition, assumed debt		$ 282						$ 385
NuVista Energy Ltd [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Purchase of common stock, shares				18.5

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