Pension and Postretirement Benefits (Amounts Recognized on Consolidated and Combined Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and postretirement benefits	$ (19.4)	$ (22.5)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Other assets	13.6	13.0
Accrued liabilities	(0.4)	(0.1)
Accrued pension and postretirement benefits	(5.8)	(7.0)
Funded status	7.4	5.9
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Other assets	0.0	0.0
Accrued liabilities	(1.3)	(1.3)
Accrued pension and postretirement benefits	(10.2)	(11.4)
Funded status	$ (11.5)	$ (12.7)