Changes in Shareholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Equity [Abstract]
Shareholders’ Equity at Beginning of Year			$ 1,992.4
Net Loss			(14.4)
Other Comprehensive Income	$ (5.0)	$ 3.7	131.8	$ (73.7)
Cash Dividends and Dividend Equivalents to Shareholders ($0.72 per share)			(36.9)
Repurchases of Common Stock			(3.8)
Equity-based Compensation Cost			4.4
Equity-based Awards, Net of Shares Exchanged			0.1
Shareholders' Equity at End of Period	$ 2,073.6		$ 2,073.6