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Acquisition and Divestitures (Schedule of WPX Revenue and Earnings Included In Devon's Consolidated Comprehensive Statements Of Earnings) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Total revenues	$ 12,206	$ 4,828	$ 6,220
Net earnings (loss)	2,833	$ (2,671)	$ (353)
WPX
Business Acquisition [Line Items]
Total revenues	5,734
Net earnings (loss)	$ 1,382

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