Financial Instruments and Derivative Financial Instruments 4 (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Derivative [Line Items]
Long-term Debt, Fair Value	$ 204.1	$ 146.1
Long-term Debt	203.1	145.3
Notional Amount of Foreign Currency Derivatives	15.4	15.6
Foreign Currency Derivatives at Fair Value, Net	(0.1)	0.4
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	0.1
Interest Rate Derivatives, at Fair Value, Net	(0.7)	(1.5)
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ (0.6)