Nature of Operations and Significant Accounting Policies (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 783.8	$ 763.8	$ 914.1
Other comprehensive (loss) income before reclassifications	14.9	(58.3)	(38.6)
Amounts reclassified from accumulated other comprehensive income (loss)	(2.0)	(0.9)	(0.2)
Other comprehensive income (loss), net of tax	12.9	(59.2)	(38.8)
Ending balance	964.0	783.8	763.8
Tax (detriment) benefit	(1.5)	(2.1)	0.8
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(131.5)	(72.3)	(33.5)
Ending balance	(118.6)	(131.5)	(72.3)
Defined Benefit Pension and Other Postretirement Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	9.0	(1.0)	(8.3)
Other comprehensive (loss) income before reclassifications	(3.2)	10.9	7.5
Amounts reclassified from accumulated other comprehensive income (loss)	(2.0)	(0.9)	(0.2)
Other comprehensive income (loss), net of tax	(5.2)	10.0	7.3
Ending balance	3.8	9.0	(1.0)
Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(140.5)	(71.3)	(25.2)
Other comprehensive (loss) income before reclassifications	18.1	(69.2)	(46.1)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0	0.0
Other comprehensive income (loss), net of tax	18.1	(69.2)	(46.1)
Ending balance	$ (122.4)	$ (140.5)	$ (71.3)