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Stockholders' Equity (Summary Of Dividends Paid On Common Stock) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	[1]
Stockholders Equity [Line Items]
Dividends							$ 470	$ 794
Rate Per Share	$ 0.24	$ 0.24	$ 0.24	$ 0.44	$ 0.35	$ 0.44
Variable Dividend Date March 31, 2024
Stockholders Equity [Line Items]
Dividends						$ 299
Variable Dividend Date June 30, 2024
Stockholders Equity [Line Items]
Dividends					$ 223
Variable Dividend Date September 30, 2024
Stockholders Equity [Line Items]
Dividends				$ 272
Fixed Dividends Year To Date March 31, 2025
Stockholders Equity [Line Items]
Dividends			$ 163
Fixed Dividends Year To Date June 30, 2025 [Member]
Stockholders Equity [Line Items]
Dividends		$ 156
Fixed Dividends Year To Date September 30, 2025 [Member]
Stockholders Equity [Line Items]
Dividends	$ 151
[1] During the first nine months of 2024, Devon paid variable dividends totaling $377 million in addition to its recurring fixed dividend.

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Aggregate dividends paid during the period for each share of common stock outstanding.

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-Topic 505
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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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