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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15 false 7 2 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -8000000 -8000000 false false false 4 false true false false -4000000 -4000000 false false false xbrli:monetaryItemType monetary This element represents the recognized expense for the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties or, if not recognizing the expense in the period in which the tax return was initially filed, the expense shall be recognized in the period in which the enterprise's judgment about meeting the minimum statutory threshold changes. 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