Acquisitions, Goodwill, and Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 556.7	$ 564.9
Goodwill, Acquired During Period	473.3
Goodwill, Ending Balance	1,039.1	556.7
Goodwill, Acquired in Other Acquisitions and Foreign Currency Translation Gain (Loss)	$ (9.1)	$ 8.2