TAXES - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Currently payable -
Federal	$ 32	$ 14	$ 0
State	29	1	11
Currently payable (receivable) Total	61	15	11
Deferred, net -
Federal	190	279	946
State	130	(24)	47
Deferred Tax Total	320	255	993
Investment tax credit amortization	(4)	(3)	(4)
Total income taxes on income from continuing operations	$ 377	267	$ 1,000
Discontinued Operations, Disposed of by Means Other than Sale \| FES and FENOC \| Federal
Deferred, net -
Federal		$ 21

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