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Other Income (Expense), net - Components of Other Income (Expense), Net (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2015 | Apr. 30, 2014 | Apr. 30, 2015 | Apr. 30, 2014
Other Nonoperating Income (Expense) |  |  |  |
Interest income | $ 552 us-gaap_InterestIncomeOther | $ 314 us-gaap_InterestIncomeOther | $ 1,700 us-gaap_InterestIncomeOther | $ 681 us-gaap_InterestIncomeOther
Interest expense | (804)us-gaap_InterestExpense | (582)us-gaap_InterestExpense | (1,457)us-gaap_InterestExpense | (939)us-gaap_InterestExpense
Gain (loss) on assets related to executive deferred compensation plan | 5,973 snps_GainOrLossOnAssetsRelatedToDeferredCompensationPlan | 3,419 snps_GainOrLossOnAssetsRelatedToDeferredCompensationPlan | 5,276 snps_GainOrLossOnAssetsRelatedToDeferredCompensationPlan | 4,460 snps_GainOrLossOnAssetsRelatedToDeferredCompensationPlan
Foreign currency exchange gain (loss) | 511 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | (109)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | 4,205 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | 785 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Other, net | 1,725 us-gaap_OtherNonoperatingIncomeExpense | 1,183 us-gaap_OtherNonoperatingIncomeExpense | 3,349 us-gaap_OtherNonoperatingIncomeExpense | 10,266 us-gaap_OtherNonoperatingIncomeExpense
Total | $ 7,957 us-gaap_NonoperatingIncomeExpense | $ 4,225 us-gaap_NonoperatingIncomeExpense | $ 13,073 us-gaap_NonoperatingIncomeExpense | $ 15,253 us-gaap_NonoperatingIncomeExpense

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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894 + Details
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