Document And Entity Information - shares shares in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 20, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Amendment Flag	false
Entity Registrant Name	DEVON ENERGY CORP/DE
Entity Central Index Key	0001090012
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2016
Entity Filer Category	Large Accelerated Filer
Document Fiscal Period Focus	Q1
Entity Common Stock, Shares Outstanding		524.0