Discontinued Operations - Summary of Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) discontinued operating activities	$ (406)	$ (541)	$ (254)	$ (513)
Net cash provided by (used in) discontinued investing activities	(1)	(15)	2,443	4,006
Net cash provided by (used in) discontinued financing activities	64	(2)	2	(9)
eBay Korea
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) discontinued operating activities	22	70	29	89
Net cash provided by (used in) discontinued investing activities	(1)	(8)	(10)	(18)
Net cash provided by (used in) discontinued financing activities	64	(2)	2	(7)
Classifieds
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) discontinued operating activities	(428)	137	(283)	256
Net cash provided by (used in) discontinued investing activities	0	(7)	2,453	(51)
Net cash provided by (used in) discontinued financing activities	0	0	0	(2)
StubHub
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) discontinued operating activities	0	(748)	0	(858)
Net cash provided by (used in) discontinued investing activities	$ 0	$ 0	$ 0	$ 4,075

Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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- Definition

Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

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Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

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+ References

No definition available.

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