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Mergers, Acquisitions, and Divestitures - Schedule Of Pro Forma Information (Details) - Civitas Resources Merger - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Business Combination [Line Items]
Pro forma revenue	$ 1,784	$ 2,032
Pro forma net income (loss)	$ (285)	$ 373
Pro forma basic net income (loss) per common share (in dollars per share)	$ (1.19)	$ 1.56
Pro forma diluted net income (loss) per common share (in dollars per share)	$ (1.19)	$ 1.55

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