Derivative Financial Instruments (Summary Of The Fair Value Of Derivative Instruments On The Consolidated Balance Sheet) (Details) (Designated As Hedging Instruments [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 0.2	$ 2.4
Derivative Liabilities, Fair Value	34.9	24.6
Other Current Assets [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	0.2	2.4
Accounts Payable And Accrued Expenses [Member] | Natural Gas Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	4.6	7.2
Accounts Payable And Accrued Expenses [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	3.2	1.3
Other Long-Term Liabilities [Member] | Natural Gas Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value		2.1
Other Long-Term Liabilities [Member] | Interest Rate Swap Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ 27.1	$ 14.0