Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Tax expense at Federal statutory income tax rate	$ 16.0	$ 29.5	$ 26.5
Impact of foreign operations	4.0	1.5	2.0
Foreign source income, net of tax credits	(2.3)	(6.5)	(4.9)
State tax, net of federal	(0.5)	6.9	0.2
Deferred tax adjustment	1.2	0.0	0.0
Unrecognized tax benefits	(0.2)	1.9	(8.8)
Equity compensation excess tax deductions	0.3	(3.0)	0.3
General business credits	(2.4)	(0.8)	(0.9)
Distribution related foreign taxes	1.1	1.5	2.5
Executive compensation limitation	0.9	2.9	1.6
Valuation allowance change	0.7	(6.9)	0.5
Other	0.9	(3.2)	(0.8)
Total	$ 19.7	$ 23.8	$ 18.2