Derivatives (Forward Contracts Netting) (Details) (Forward Contracts, USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative Assets	$ 0.3	$ 0	[1]
Derivative Liabilities	(0.4)	(0.1)
Net amounts recognized in Other assets	(0.1)	(0.1)
United States of America, Dollars
Derivative [Line Items]
Derivative Assets	0.2	0	[1]
Derivative Liabilities	(0.4)	0
Net amounts recognized in Other assets	(0.2)	0
Euro Member Countries, Euro
Derivative [Line Items]
Derivative Assets	0	0	[1]
Derivative Liabilities	0	(0.1)
Net amounts recognized in Other assets	0	(0.1)
United Kingdom, Pounds
Derivative [Line Items]
Derivative Assets	0.1	0	[1]
Derivative Liabilities	0	0
Net amounts recognized in Other assets	$ 0.1	$ 0

[1] Amount equal to fair value of instrument as recognized in other assets.