Foreign Currency Risk Management And Derivatives (Changes In Foreign Currency Exchange Rates And Derivative Foreign Currency Forward Contracts) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Foreign Currency Exchange Gain Loss [Line Items]
Unrealized foreign currency exchange rate gains (losses)			$ 2,405	$ (3,638)
Foreign Currency Exchange Rates [Member]
Foreign Currency Exchange Gain Loss [Line Items]
Unrealized foreign currency exchange rate gains (losses)	3,313	(6,622)	2,405	(3,638)
Realized foreign currency exchange rate gains (losses)	(1,266)	66	(1)	388
Foreign Currency Forward Contracts [Member]
Foreign Currency Exchange Gain Loss [Line Items]
Unrealized derivative gains (losses)	27	1,654	579	1,149
Realized derivative gains (losses)	$ 2,105	$ (3,709)	$ 2,422	$ (36)

The net realized foreign currency transaction gain (loss) (pretax) included in determining net income from transactions that were settled as of the balance sheet date.

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- Definition

The aggregate unrealized foreign currency transaction gain (loss) (pretax) included in determining net income for the reporting period. Represents the aggregate of gains (losses) on transactions that are unsettled as of the balance sheet date, which is therefore an adjustment to reconcile income (loss) from continuing operations to net cash provided by or used in continuing operations. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting entity's financial statements. For certain entities, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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