| Document and Entity Information | Jan. 07, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | DEVON ENERGY CORP/DE |
| Entity Incorporation State Country Code | DE |
| Amendment Flag | true |
| Entity Central Index Key | 0001090012 |
| Document Type | 8-K/A |
| Document Period End Date | Jan. 7, 2021 |
| Entity File Number | 001-32318 |
| Entity Tax Identification Number | 73-1567067 |
| Entity Address, Address Line One | 333 W. SHERIDAN AVE. |
| Entity Address, City or Town | OKLAHOMA CITY |
| Entity Address, State or Province | OK |
| Entity Address, Postal Zip Code | 73102-5015 |
| City Area Code | 405 |
| Local Phone Number | 235-3611 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, par value $0.10 per share |
| Trading Symbol | DVN |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 to the Initial Form 8-K amends the Initial Form 8-K to include certain financial statements, certain pro forma financial information and certain other information. The WPX historical consolidated financial statements include amounts related to the Felix assets acquired on March 6, 2020. Due to immateriality, no adjustments are included in the Pro Forma Financial Statements to incorporate revenues and expenses for Felix prior to March 6, 2020. Except as provided herein, the disclosures made in the Initial Form 8-K remain unchanged. |
