Income Taxes (Schedule Of Components Of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current
Federal	$ (19.3)	$ 0.0	$ 0.4
State	9.4	5.3	7.3
Total Current	(9.9)	5.3	7.7
Deferred
Federal	389.9
State	2.6	22.5	(23.0)
Total Deferred	168.8	135.2	158.0
Deferred Investment Credits	(0.8)	(1.0)	(1.1)
Income Taxes	158.1	139.5	164.6
Investment Tax Credit Carryforward
Deferred
Federal	2.2
Investment Tax Credit	(0.1)	(2.1)	0.0
Operating loss carryforward and investment credits
Deferred
Federal	105.9	49.7	87.9
Utilization expense of operating loss carryforwards
Deferred
Federal	$ 60.4	$ 65.1	$ 93.1

Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.

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