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INVESTMENTS - Summary of Investments by Major Security Type (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Cost	$ 826	$ 826
Gross Unrealized Gains / Upward Adjustments	314	259
Gross Unrealized Losses / Downward Adjustments	(489)	(549)
Carrying Value	651	536
Equity securities with readily determinable fair values | Long-term Investments
Debt and Equity Securities, FV-NI [Line Items]
Cost	715	715
Gross Unrealized Gains / Upward Adjustments	55	0
Gross Unrealized Losses / Downward Adjustments	(263)	(324)
Carrying Value	507	391
Equity securities of private entities | Long-term Investments
Debt and Equity Securities, FV-NI [Line Items]
Cost	111	111
Gross Unrealized Gains / Upward Adjustments	259	259
Gross Unrealized Losses / Downward Adjustments	(226)	(225)
Carrying Value	$ 144	$ 145

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Topic 321
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-Topic 210
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-Topic 820
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