Share-Based Compensation Plans (Schedule of Cash Proceeds, Tax Benefits and Intrinsic Value Related to Stock Options) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Proceeds from Stock Options Exercised	$ 19.4	[1]	$ 8.6	[1]	$ 16.8	[1]
Tax (obligation) benefit realized for stock options exercised	(1.8)		(3.7)		1.3
Intrinsic value of stock options exercised	$ 6.4		$ 2.2		$ 10.0

[1] Non-cash financing activities included the change in fair market value of interest-rate swap agreements of $(.7) in 2013, $(8.4) in 2012 and $53.2 in 2011 (see Note 8, Financial Instruments and Risk Management).