| Document and Entity Information Document | Oct. 28, 2020 |
| Entity Information [Line Items] | |
| Entity Central Index Key | 0001065088 |
| Entity Incorporation, State or Country Code | DE |
| Document Type | 8-K |
| Document Period End Date | Oct. 28, 2020 |
| Entity Registrant Name | eBay Inc |
| Entity Address, Address Line One | 2025 Hamilton Avenue |
| Entity Address, City or Town | San Jose |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95125 |
| City Area Code | (408) |
| Local Phone Number | 376-7008 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-37713 |
| Entity Tax Identification Number | 77-0430924 |
| Amendment Flag | false |
| Common Stock | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common stock |
| Trading Symbol | EBAY |
| Security Exchange Name | NASDAQ |
| 6.000% Senior Notes Due On 2056 | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | 6.00% Notes due 2056 |
| Trading Symbol | EBAYL |
| Security Exchange Name | NASDAQ |
