Benefit Plans, Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost	$ 6.6	$ 7.7	$ 7.7
Interest cost	11.0	7.9	10.5
Expected return on plan assets	(21.5)	(22.0)	(20.1)
Recognized net actuarial (gain) loss	5.3	12.1	13.9
Settlement/curtailment (gain) loss	3.5	3.4	6.4
Net periodic benefit cost	4.9	9.1	18.4
Post-Retirement Benefits [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost	0.0	0.1	0.2
Interest cost	0.0	0.1	0.2
Expected return on plan assets	0.0	0.0	0.0
Recognized net actuarial (gain) loss	(0.4)	(0.8)	(0.9)
Settlement/curtailment (gain) loss	0.0	(1.6)	0.0
Net periodic benefit cost	$ (0.4)	$ (2.2)	$ (0.5)