Fair Value (Fair Value of Financial Instruments) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Jun. 30, 2012
Money market funds	$ 0.5		$ 26.9		$ 40.0
Fair Value [Member]
Available-for-sale securities	2.5		1.9
Money market funds	0.5		26.9
Debt maturing within one year	(188.0)		(572.2)
Long-term debt	(2,511.6)		(2,547.7)
Foreign exchange forward contracts	3.1		3.4
Interest-rate swap agreements	0		93.1
Carrying Amount [Member]
Available-for-sale securities	2.5		1.9
Money market funds	0.5		26.9
Debt maturing within one year	(188.0)	[1]	(572.0)	[1]
Long-term debt	(2,532.7)	[1]	(2,623.8)	[1]
Foreign exchange forward contracts	3.1		3.4
Interest-rate swap agreements	$ 0		$ 93.1

[1] The carrying value of debt maturing within one year and long-term debt includes any related discount or premium, unamortized deferred gains on terminated interest-rate swap agreements, and unrealized losses from interest-rate swap agreements, as applicable.