FINANCING ACTIVITIES - Interest Expense (Details) - Convertible Notes - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Non-cash amortization of debt issuance costs	$ 10	$ 12
Contractual coupon interest	20	22
Total interest expense	$ 30	$ 34