INVESTMENTS - Carrying Value of Non-marketable Equity Securities Measured Using the Measurement Alternative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Equity Securities without Readily Determinable Fair Value, Annual Amount [Abstract]
Measurement alternative - carrying value	$ 1,639,000,000	$ 1,676,000,000
Measurement alternative - impairment losses	135,000,000	139,000,000
Measurement alternative - downward changes for observable prices	24,000,000	3,000,000
Measurement alternative - upward changes for observable prices	87,000,000	177,000,000
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Cumulative Amount [Abstract]
Measurement alternative - impairment losses	338,000,000
Measurement alternative - downward changes for observable prices	34,000,000
Measurement alternative - upward changes for observable prices	951,000,000
Impairment loss recognized in earnings for non-marketable equity securities carried at cost	$ 0	$ 0