Nature of Operations and Significant Accounting Policies (Schedule of Changes to Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived and Indefinite-Lived Intangible Assets [Roll Forward]
Balance at beginning of period, net of accumulated amortization	$ 344.9	$ 388.5	$ 433.3
Amortization expense	(35.9)	(36.0)	(37.2)
Currency translation and other	(0.1)	(7.6)	(7.6)
Balance at end of period, net of accumulated amortization	$ 308.9	$ 344.9	$ 388.5