INVESTMENTS - Summary of Investments by Major Security Type (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt securities:
Cost	$ 363	$ 580
Gross Unrealized Gains /Upward Adjustments	0	0
Gross Unrealized Losses /Downward Adjustments	(1)	(4)
Carrying Value	362	576
Equity securities:
Cost	812	793
Gross Unrealized Gains /Upward Adjustments	259	259
Gross Unrealized Losses /Downward Adjustments	(628)	(612)
Carrying Value	443	440
Short-term Investments
Debt securities:
Cost	363	580
International government securities \| Short-term Investments
Debt securities:
Cost	41	63
Gross Unrealized Gains/Upward Adjustments	0	0
Gross Unrealized Losses/Downward Adjustments	0	0
Carrying Value	41	63
U.S. government securities \| Short-term Investments
Debt securities:
Cost	106	152
Gross Unrealized Gains/Upward Adjustments	0	0
Gross Unrealized Losses/Downward Adjustments	0	(1)
Carrying Value	106	151
Corporate debt securities \| Short-term Investments
Debt securities:
Cost	216	365
Gross Unrealized Gains/Upward Adjustments	0	0
Gross Unrealized Losses/Downward Adjustments	(1)	(3)
Carrying Value	215	362
Equity securities with readily determinable fair values \| Long-term Investments
Equity securities:
Cost	715	715
Gross Unrealized Gains /Upward Adjustments	0	0
Gross Unrealized Losses /Downward Adjustments	(420)	(404)
Carrying Value	295	311
Equity securities of private entities \| Long-term Investments
Equity securities:
Cost	97	78
Gross Unrealized Gains /Upward Adjustments	259	259
Gross Unrealized Losses /Downward Adjustments	(208)	(208)
Carrying Value	$ 148	$ 129

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