GENERAL INFORMATION AND OTHER FINANCIAL DATA - TRANSACTIONS WITH AFFILIATES - NARRATIVE (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Related Party Transaction [Line Items]
Other current assets	$ 234	$ 262	[1]
SI Partners | Disposal Group Held-for-sale
Related Party Transaction [Line Items]
Due from unconsolidated affiliates	4	3
Due to unconsolidated affiliates	485	477
Related Party
Related Party Transaction [Line Items]
Other current liabilities	0	8	[1]
Related Party | Tax Sharing Arrangement
Related Party Transaction [Line Items]
Other current assets	$ 34
Other current liabilities		$ 8

[1] Derived from audited financial statements.