v3.26.1
DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION - Summarized Income Statement Data (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Schedule of Equity Method Investments [Line Items]    
Operating revenues $ 336 $ 303
Net Income 134 111
Equity method investment, non-consolidated investees    
Schedule of Equity Method Investments [Line Items]    
Operating revenues 217 209
Operating expenses 94 95
Net Income $ 97 $ 85