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Other, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other, Net [Abstract]
Interest income	$ 3.4	$ 2.7	$ 7.8	$ 6.3
AFUDC equity	32.1	6.0	56.7	15.2
Pension and other postretirement non-service cost	(5.9)	(9.8)	(10.2)	(18.2)
Other, net	29.2	(1.6)	51.4	1.9
Other Expenses	$ (0.4)	$ (0.5)	$ (2.9)	$ (1.4)

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Pension and Other Postretirement Non Service Cost

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