v3.25.2
DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION - Summarized Income Statement Data (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Schedule of Equity Method Investments [Line Items]            
Operating revenues $ 309   $ 244   $ 612 $ 484
Net Income 111 $ 111 100 $ 100 222 200
Equity method investment, non-consolidated investees            
Schedule of Equity Method Investments [Line Items]            
Operating revenues 201   198   410 412
Operating expenses 103   94   198 188
Net Income $ 71   $ 91   $ 156 $ 194