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Other, Net (Schedule Of Other Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Nonoperating Income [Line Items]
Interest income	$ 10.4	$ 9.0	$ 4.3
AFUDC equity	75.1	25.2	15.1
Charitable Contributions	(5.4)	(1.8)	(4.4)
Pension and Other Postretirement Non Service Cost	(13.5)	(24.0)	27.6
Other Nonoperating Expense	(2.1)
Miscellaneous		(0.4)	(0.4)
Total Other, net	64.5	8.0	52.2
Interest Rate Swap Settled
Other Nonoperating Income [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 0.0	$ 0.0	$ 10.0

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