RELATED PARTY TRANSACTIONS - Summary of Amounts Included in Condensed Consolidated Statements of Operations Related to Fee for Service Arrangement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Related Party Transaction [Line Items]
Equity in earnings from unconsolidated affiliates	$ 2	$ 4	$ 5	$ 7
Revenues	1,007	948	1,941	1,727
Related Party
Related Party Transaction [Line Items]
Equity in earnings from unconsolidated affiliates	2	4	5	7
Revenues	$ 56	$ 47	$ 108	$ 81