v3.26.3
STOCKHOLDER'S EQUITY Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Balance at the beginning of period $ 22   $ 21 $ 21   $ 28 $ 28 $ 21 $ 28
Derivative Instruments [Abstract]                  
Reclassification of net gain relating to interest rate cash flow hedges from AOCI to earnings (net of tax of $(1), $—, $(2) and $(1), respectively) (a) (2)     (1)       (5) (2)
Gain (loss) on interest rate swaps relating to interest rate cash flow hedges (net of tax of $1, $—, $3 and $(2), respectively) 5     0       9 (6)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX 3 $ (1) $ 2 (1) $ (4) $ (3)   4 (8)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax 1     0       3 (2)
Balance at the end of period 25 $ 22   20 $ 21   $ 21 25 20
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax $ (1)     $ 0       $ (2) $ (1)