Pension Benefits and Postretirement Benefits Other Than Pensions - Pension Income (Details) - Pension Plans - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Interest Cost on Projected Benefit Obligation	$ 3.4	$ 2.2
Expected Return on Plan Assets	(3.3)	(1.9)
Amortization of Prior Service Credit	0.2	0.2
Amortization of Net Actuarial Loss	0.0	0.4
Total Pension Expense	$ 0.3	$ 0.9