Income Taxes (Details) $ in Millions	3 Months Ended
Mar. 31, 2017 USD ($)
Income Tax Disclosure [Abstract]
Tax benefit due to step-up in tax basis of foreign assets	$ 695

Effective Income Tax Rate Reconciliation, Change in Tax Basis of Assets, Amount

No definition available.

Name:	ebay_EffectiveIncomeTaxRateReconciliationChangeinTaxBasisofAssetsAmount
Namespace Prefix:	ebay_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration