Benefit Plans, Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Benefits [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost	$ 4.2	$ 4.5	$ 6.6
Interest cost	16.0	16.0	11.0
Expected return on plan assets	(19.8)	(17.8)	(21.5)
Recognized net actuarial (gain) loss	1.5	2.9	5.3
Settlement/curtailment (gain) loss	0.0	0.1	3.5
Net periodic benefit cost	1.9	5.7	4.9
Post-Retirement Benefits [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost	0.0	0.0	0.0
Interest cost	0.1	0.1	0.0
Expected return on plan assets	0.0	0.0	0.0
Recognized net actuarial (gain) loss	(0.4)	(0.5)	(0.4)
Settlement/curtailment (gain) loss	0.0	0.0	0.0
Net periodic benefit cost	$ (0.3)	$ (0.4)	$ (0.4)