Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Jan. 25, 2019	Jun. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	EBAY INC
Entity Trading Symbol	EBAY
Entity Central Index Key	0001065088
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filer	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		914,880,451
Entity Public Float			$ 33,679,134,490
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false