Hedging Activities, Derivative Instruments And Credit Risk (Narrative) (Details) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 USD ($) years	Dec. 31, 2011 EUR (€)	Dec. 31, 2010 USD ($)	Dec. 31, 2010 EUR (€)
Hedging Activities, Derivative Instruments And Credit Risk [Abstract]
Borrowings resulting in interest rate risk	$ 403.8
Foreign currency contracts maturity period, years	1	1
Number of fixed rate payor on interest rate swap contracts	3	3
Variable rate borrowings	50.0	20.0
Variable interest rate, lower range	1.80%	1.80%
Variable interest rate, higher range	2.20%	2.20%
Lower expiration dates	2012	2012
Higher expiration dates	2013	2013
Expected reclassification of losses out of AOCI into earnings during the next 12 months	0.7
Variable rate borrowings outstanding	329.0	39.0
Number of foreign currency forward contracts outstanding	43	43
Notional amounts, lower range	0.1
Notional amounts, higher range	160.1
Portion of EURO Term Loan designated as net investment hedge		37.6		0
Net losses from foreign currency forward contracts	2.0		2.4
Total net foreign currency gains (losses)	0.7		2.0
Amount of gain recognized in other comprehensive income	2.8		0.3
Net balances of term loan designated as hedge included in accumulated other comprehensive income net of tax	$ (2.3)		$ (5.1)