Pension Plans (Components of Net Periodic Pension Cost) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Defined Benefit Plan, Type [Extensible Enumeration]	us-gaap:PensionPlansDefinedBenefitMember	us-gaap:PensionPlansDefinedBenefitMember
Interest cost	$ 5.5	$ 3.8
Expected return on plan assets	(5.5)	(4.3)
Recognized net actuarial loss	1.9	1.3
Net periodic pension cost (benefit)	$ 1.9	$ 0.8