INVESTMENTS - Summary of Investments by Major Security Type (Details) - USD ($) $ in Millions		Jun. 30, 2023	Dec. 31, 2022
Debt securities:
Cost		$ 650	$ 176
Gross Unrealized Gains /Upward Adjustments		0	0
Gross Unrealized Losses /Downward Adjustments		(10)	(1)
Carrying Value		640	175
Equity securities:
Cost		830	1,819
Gross Unrealized Gains /Upward Adjustments		259	1,611
Gross Unrealized Losses /Downward Adjustments		(649)	(641)
Carrying Value		440	2,789
Short-term Investments
Debt securities:
Cost		650	176
Long-term Investments
Debt securities:
Cost		37	576
Gross Unrealized Gains/Upward Adjustments		0	0
Gross Unrealized Losses/Downward Adjustments		(1)	(11)
Carrying Value		36	565
Equity securities:
Cost		793	1,243
Gross Unrealized Gains /Upward Adjustments		259	1,611
Gross Unrealized Losses /Downward Adjustments		(648)	(630)
Carrying Value		404	2,224
International government securities | Short-term Investments
Debt securities:
Cost		67	13
Gross Unrealized Gains/Upward Adjustments		0	0
Gross Unrealized Losses/Downward Adjustments		(1)	0
Carrying Value		66	13
International government securities | Long-term Investments
Debt securities:
Cost		9	63
Gross Unrealized Gains/Upward Adjustments		0	0
Gross Unrealized Losses/Downward Adjustments		0	(1)
Carrying Value		9	62
U.S. government securities | Short-term Investments
Debt securities:
Cost	[1]	218	131
Gross Unrealized Gains/Upward Adjustments	[1]	0	0
Gross Unrealized Losses/Downward Adjustments	[1]	(3)	(1)
Carrying Value	[1]	215	130
U.S. government securities | Long-term Investments
Debt securities:
Cost		3	147	[1]
Gross Unrealized Gains/Upward Adjustments		0	0	[1]
Gross Unrealized Losses/Downward Adjustments		0	(3)	[1]
Carrying Value		3	144	[1]
Corporate debt securities | Short-term Investments
Debt securities:
Cost		365	32
Gross Unrealized Gains/Upward Adjustments		0	0
Gross Unrealized Losses/Downward Adjustments		(6)	0
Carrying Value		359	32
Corporate debt securities | Long-term Investments
Debt securities:
Cost		25	366
Gross Unrealized Gains/Upward Adjustments		0	0
Gross Unrealized Losses/Downward Adjustments		(1)	(7)
Carrying Value		24	359
Equity securities with readily determinable fair values | Long-term Investments
Equity securities:
Cost		715	1,165
Gross Unrealized Gains /Upward Adjustments		0	1,352
Gross Unrealized Losses /Downward Adjustments		(440)	(446)
Carrying Value		275	2,071
Equity securities of private companies | Long-term Investments
Equity securities:
Cost		78	78
Gross Unrealized Gains /Upward Adjustments		259	259
Gross Unrealized Losses /Downward Adjustments		(208)	(184)
Carrying Value		$ 129	$ 153

[1] Includes investments in U.S. municipal bonds.