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Balance Sheet Components - Narrative (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Balance Sheet Components [Abstract] |  |  |
Allowance for doubtful accounts and authorized credits | $ 144 |  | $ 110
Deferred revenue recognized | $ 75 | $ 64 |

X
- Definition Allowance for Doubtful Accounts Receivable And Authorized Credits + References No definition available. + Details
Name: | ebay_AllowanceForDoubtfulAccountsReceivableAndAuthorizedCredits
Namespace Prefix: | ebay_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Balance Sheet Components [Abstract] + References No definition available. + Details
Name: | ebay_BalanceSheetComponentsAbstract
Namespace Prefix: | ebay_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration