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Derivative Financial Instruments (Fair Values Of Derivative Instruments) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	$ 488	$ 5,071
Derivative Liabilities, Fair Value	(52)	(21,434)
Commodity Contract \| Other Current Assets [Member] \| Not Designated as Hedging Instrument Member
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	488	5,071
Commodity Contract \| Accrued Expenses And Other Current Liabilities \| Designated as Hedging Instrument Member
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value		(21,100)
Foreign Exchange Contract \| Accrued Expenses And Other Current Liabilities \| Not Designated as Hedging Instrument Member
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ (52)	$ (334)

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details