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Note 11. Derivative Instruments (Detail) - Gains and Losses Related to Forward Contracts (USD $) In Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010
Sale Of Products [Member] |  |  |  |
Gains And Losses Related To Forward Contracts | $ 5,994 | $ (5,348) | $ 6,697 | $ 1,003
Gain (Loss) On Derivatives Contracts [Member] |  |  |  |
Gains And Losses Related To Forward Contracts | $ 40,382 | $ (13,195) | $ 38,907 | $ (11,196)

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5618551-113959 + Details
Name: | us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Namespace Prefix: | us-gaap
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration