SEGMENT INFORMATION AND CONCENTRATION - Revenue from External Customers by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended								6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from External Customer [Line Items]
Revenue	$ 963	$ 978	$ 967	$ 922	$ 966	$ 960	$ 950	$ 917	$ 1,889	$ 2,867	$ 3,830	$ 3,793	$ 3,692
Recurring revenue
Revenue from External Customer [Line Items]
Revenue											2,195	2,120	2,069
All other products and services
Revenue from External Customer [Line Items]
Revenue											$ 1,635	$ 1,673	$ 1,623