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Share-Based Compensation (Summary Of Unvested Restricted Stock Awards, Performance-Based Restricted Stock Awards And Performance Share Units) (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested at December 31, 2019 | shares	4,984
Granted, awards and units | shares	3,056
Vested, awards and units | shares	(2,093)
Forfeited, awards and units | shares	(294)
Unvested at September 30, 2020 | shares	5,653
Unvested weighted average grant-date fair value at December 31, 2019 | $ / shares	$ 29.65
Granted, weighted average grant-date fair value | $ / shares	21.90
Vested, weighted average grant-date fair value | $ / shares	29.11
Forfeited, weighted average grant-date fair value | $ / shares	24.44
Unvested weighted average grant-date fair value at September 30, 2020 | $ / shares	$ 25.93
Performance-Based Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested at December 31, 2019 | shares	153
Vested, awards and units | shares	(109)
Unvested at September 30, 2020 | shares	44
Unvested weighted average grant-date fair value at December 31, 2019 | $ / shares	$ 33.88
Vested, weighted average grant-date fair value | $ / shares	29.51
Unvested weighted average grant-date fair value at September 30, 2020 | $ / shares	$ 44.70
Performance Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested at December 31, 2019 | shares	2,155
Granted, awards and units | shares	688
Vested, awards and units | shares	(455)
Forfeited, awards and units | shares	(385)
Unvested at September 30, 2020 | shares	2,003	[1]
Unvested weighted average grant-date fair value at December 31, 2019 | $ / shares	$ 40.35
Granted, weighted average grant-date fair value | $ / shares	27.89
Vested, weighted average grant-date fair value | $ / shares	52.56
Forfeited, weighted average grant-date fair value | $ / shares	47.68
Unvested weighted average grant-date fair value at September 30, 2020 | $ / shares	$ 31.89
[1] A maximum of 4.0 million common shares could be awarded based upon Devon’s final TSR ranking.

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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