GENERAL INFORMATION AND OTHER FINANCIAL DATA - CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 2,247	$ 108	[1]
Restricted cash, current	23	31	[1]
Restricted cash, noncurrent	3	3	[1]
Cash, cash equivalents and restricted cash in discontinued operations	181	75
Total cash, cash equivalents and restricted cash on the Condensed Consolidated Statements of Cash Flows	$ 2,454	$ 217

[1] Derived from audited financial statements.