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Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Hedging Activities [Abstract]
Maximum duration to hedge foreign currency risk	18 months
Net gain expected to be reclassified into earnings within the next 12 months	$ 9

- Definition

The effective portion of gain reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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