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Document And Entity Information - shares
shares in Millions
 6 Months Ended
Jun. 30, 2019
Jul. 24, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Document Period End Date Jun. 30, 2019  
Amendment Flag false  
Trading Symbol DVN  
Entity Registrant Name DEVON ENERGY CORP/DE  
Entity Central Index Key 0001090012  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2019  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Document Fiscal Period Focus Q2  
Entity Common Stock, Shares Outstanding   404.2
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity File Number 001-32318  
Entity Tax Identification Number 731567067  
Entity Address, Address Line One 333 West Sheridan Avenue  
Entity Address, City or Town Oklahoma City  
Entity Address, State or Province Oklahoma  
Entity Address, Postal Zip Code 73102-5015  
City Area Code 405  
Local Phone Number 235-3611