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Supplemental Consolidated Financial Information - Equity Method Investments and Warrants (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Balance Sheet Components [Line Items]
Unrealized change in fair value of equity investment	$ (4)	$ (246)
Change in fair value of warrant	0	149
Loss on equity investments and warrant, net	(2)	(97)
Adevinta
Balance Sheet Components [Line Items]
Unrealized change in fair value of equity investment	0	(234)
Gmarket
Balance Sheet Components [Line Items]
Unrealized change in fair value of equity investment	0	(6)
Loss on other investments
Balance Sheet Components [Line Items]
Unrealized change in fair value of equity investment	$ (2)	$ (6)

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Balance Sheet Components [Line Items]

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Gain (Loss) On Equity Investments And Warrant

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(d)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-4

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 25
-Paragraph 13
-SubTopic 10
-Topic 480
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481766/480-10-25-13

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