Derivative Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Derivative Liabilities	$ 12.7	$ 30.5
Natural Gas Commodity Contracts [Member]
Derivative [Line Items]
Maximum length of time hedged in cash flow hedge	24 months
Notional amount	20.1	21.5
Term Loan B [Member]
Derivative [Line Items]
LIBOR floor	1.00%
Foreign Exchange Contracts [Member] | Sales And Purchases [Member]
Derivative [Line Items]
Maximum length of time hedged in cash flow hedge	15 months
Notional amount	130.9	129.7
Foreign Exchange Contracts [Member] | Intercompany Loans And Dividends [Member]
Derivative [Line Items]
Notional amount	36.7
Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in income for derivative instruments	0.6	0	4.7
Derivative Liabilities	$ 0.6