Financial Instruments (Notional Amounts And Fair Values Of Derivatives Designated As Cash Flow Hedges And Derivatives Not Designated As Cash Flow Hedges) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Fair Value of asset for derivatives designated as cash flow hedges	$ 4.2	[1]	$ 32.0	[1]
Fair Value of liability for derivatives designated as cash flow hedges	15.7	[2]	4.9	[2]
Fair Value of assets for derivatives not designated as cash flow hedges	6.5	[1]	4.5	[1]
Fair Value of liability for derivatives not designated as cash flow hedges	20.5	[2]	11.3	[2]
Interest Rate Swaps [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of derivatives designated as cash flow hedges	32.1		57.8
Fair Value of asset for derivatives designated as cash flow hedges	0	[1]	0	[1]
Fair Value of liability for derivatives designated as cash flow hedges	0.6	[2]	1.8	[2]
Commodity Futures [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives not designated as cash flow hedges	133.0		91.6
Fair Value of assets for derivatives not designated as cash flow hedges	2.4	[1]	1.4	[1]
Fair Value of liability for derivatives not designated as cash flow hedges	12.6	[2]	7.9	[2]
Commodity Futures [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of derivatives designated as cash flow hedges	216.1		164.6
Fair Value of asset for derivatives designated as cash flow hedges	3.8	[1]	30.6	[1]
Fair Value of liability for derivatives designated as cash flow hedges	14.0	[2]	0	[2]
Foreign Currency Exchanges [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives not designated as cash flow hedges	321.7		230.3
Fair Value of assets for derivatives not designated as cash flow hedges	4.1	[1]	3.1	[1]
Fair Value of liability for derivatives not designated as cash flow hedges	7.9	[2]	3.4	[2]
Foreign Currency Exchanges [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of derivatives designated as cash flow hedges	55.4		115.2
Fair Value of asset for derivatives designated as cash flow hedges	0.4	[1]	1.4	[1]
Fair Value of liability for derivatives designated as cash flow hedges	$ 1.1	[2]	$ 3.1	[2]

[1] Balance recorded in “Prepaid expenses and other” and “Other non-current assets”

[2] Balance recorded in “Accrued liabilities” and “Other liabilities”