Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, pre-tax impairment charge	$ 68.5	$ 68.5
Indefinite-lived intangible assets, pre-tax impairment charge	$ 10.1
Amortization expense		$ 28.4	$ 25.1	$ 21.2