v3.20.1
BASIS OF PRESENTATION, PRINCIPLES OF CONSOLIDATION, AND SIGNIFICANT ACCOUNTING POLICIES - RECONCILIATION OF CASH, CASH EQUIVALENTS, AND RESTRICTED CASH (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 193 $ 320 $ 464  
Restricted cash included in other current assets 2   5  
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 195 $ 322 $ 469 $ 393