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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary Of Unvested Restricted Stock Awards and Units, Performance-Based Restricted Stock Awards And Performance Share Units |
|  |  |  |  | Performance-Based |  |  | Performance |
|  | Restricted Stock Awards |  |  | Restricted Stock Awards |  |  | Share Units |
|  | Awards |  |  | Weighted Average Grant-Date Fair Value |  |  | Awards |  |  | Weighted Average Grant-Date Fair Value |  |  | Units |  |  |  |  |  | Weighted Average Grant-Date Fair Value |
|  | (Thousands, except fair value data) |
Unvested at 12/31/19 |  |  | 4,984 |  |  | $ | 29.65 |  |  |  | 153 |  |  | $ | 33.88 |  |  |  | 2,155 |  |  |  |  |  | $ | 40.35 |
Granted |  |  | 3,056 |  |  | $ | 21.90 |  |  |  | — |  |  | $ | — |  |  |  | 688 |  |  |  |  |  | $ | 27.89 |
Vested |  |  | (2,388 | ) |  | $ | 28.96 |  |  |  | (109 | ) |  | $ | 29.51 |  |  |  | (455 | ) |  |  |  |  | $ | 52.56 |
Forfeited |  |  | (336 | ) |  | $ | 24.52 |  |  |  | — |  |  | $ | — |  |  |  | (394 | ) |  |  |  |  | $ | 47.30 |
Unvested at 12/31/20 |  |  | 5,316 |  |  | $ | 25.82 |  |  |  | 44 |  |  | $ | 44.70 |  |  |  | 1,994 |  |  | (1 | ) |  | $ | 31.89 |
(1) | A maximum of 3.2 million common shares could be awarded based upon Devon’s final TSR ranking.
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Aggregate Fair Value Of Awards And Units Table Text Block |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Restricted Stock Awards and Units |  | $ | 44 |  |  | $ | 127 |  |  | $ | 111 |
Performance-Based Restricted Stock Awards |  | $ | 2 |  |  | $ | 4 |  |  | $ | 10 |
Performance Share Units |  | $ | 10 |  |  | $ | 4 |  |  | $ | 20 |
Summary of Unrecognized Compensation Cost And Weighted Average Period For Recognition |
|  |  |  |  |  | Performance-Based |  |  |  |  |
|  | Restricted Stock |  |  | Restricted Stock |  |  | Performance |
|  | Awards |  |  | Awards |  |  | Share Units |
Unrecognized compensation cost |  | $ | 70 |  |  | $ | — |  |  | $ | 10 |
Weighted average period for recognition (years) |  |  | 2.4 |  |  |  | 0.4 |  |  |  | 1.7 |
Summary Of Performance Share Units Grant-Date Fair Values And Their Related Assumptions |
|  | 2020 |  | 2019 |  |  | 2018 |
Grant-date fair value |  |  | $ | 27.89 |  |  |  | $ | 28.43 |  |  | — |  | $ | 29.53 |  |  | $ | 36.23 |  |  | — |  | $ | 37.88 |
Risk-free interest rate |  | 1.36% |  | 2.48% |  |  | 2.28% |
Volatility factor |  | 38.4% |  | 39.1% |  |  | 45.8% |
Contractual term (years) |  | 2.89 |  | 2.89 |  |  | 2.89 |

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- Definition Tabular disclosure of the aggregate fair value of Restricted Stock, Performance-based Restricted Stock and Performance Shares Units that vested during the period. + References No definition available. + Details
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- Definition Schedule of Share-based Payment Award, Other Than Options, Valuation Assumptions [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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