Financial Instruments (Narrative) (Details) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			12 Months Ended	1 Months Ended	12 Months Ended
	Sep. 30, 2010	Dec. 31, 2011 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2009 EUR (€)	Dec. 31, 2011 Cross Currency Swap [Member]	Feb. 28, 2009 Interest Rate Swaps [Member] USD ($)	Dec. 31, 2009 Interest Rate Swaps [Member] USD ($)	Dec. 31, 2011 Forward Currency Contracts [Member]	Dec. 31, 2009 Forward Currency Contracts [Member] USD ($)
Derivatives, Fair Value [Line Items]
Derivative instrument maturity period (years)					10
Payment to close out derivative contract						$ 16
Fair value of interest rate swap						300
Loss deferred as a component of AOCI						12
The amount of loss related to a foreign currency contract which qualified as a net investement hedge									(1.6)
The amount of loss related to an intercompany loan which was designated as a net investment hedge			(3.1)
Portion of loss related to interest rate swap included in interest expense							4
Loan payable				40
Number of multiple forward currency contracts matured								8
Number of interest rate swap agreements	2
Derivative gains (losses) included in AOCI		$ 1.8