Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Collateral to secure the derivative liability positions		$ 0.7
Forward pricing agreements	10.1	37.7
Unrealized loss related to forward pricing agreements	0.5
Unrealized gain related to forward pricing agreements		0.3
Fair value forward pricing agreements	10.6	38.0
Number of derivative require collateral security	0	0
February 2013 [Member] | Spanish Term Loan [Member]
Derivatives, Fair Value [Line Items]
Maturity date of outstanding interest rate swap	February 2013
April 2013 [Member] | Spanish Term Loan [Member]
Derivatives, Fair Value [Line Items]
Maturity date of outstanding interest rate swap	April 2013
June 2013 [Member] | Spanish Term Loan [Member]
Derivatives, Fair Value [Line Items]
Maturity date of outstanding interest rate swap	June 2013
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Unrealized gain (loss) on derivatives	20.1	(1.6)	6.1
Gain (loss) on derivative instruments not designated as cash flow hedges	$ (21.9)	$ (3.0)