v2.4.0.6

Tax Loss and Credit Carryforwards Available to Offset Future Income Tax Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Oct. 31, 2012
Federal |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Net operating loss carryforward | 177,517
Credit carryforward | 93,932
Federal | Minimum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Net operating loss carryforward, expiration date | 2018
Credit carryforward, expiration date | 2017
Federal | Maximum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Net operating loss carryforward, expiration date | 2031
Credit carryforward, expiration date | 2032
Foreign Tax Credit Used in Domestic Country |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward | 15,598
Foreign Tax Credit Used in Domestic Country | Minimum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward, expiration date | 2015
Foreign Tax Credit Used in Domestic Country | Maximum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward, expiration date | 2021
California Research |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward | 95,126
Credit carryforward, expiration date | Indefinite
Other State Research |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward | 8,021
Other State Research | Minimum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward, expiration date | 2013
Other State Research | Maximum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Credit carryforward, expiration date | 2032
State Research |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Net operating loss carryforward | 206,203
State Research | Minimum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Net operating loss carryforward, expiration date | 2013
State Research | Maximum |
Net Operating Loss and Tax Credit Carryforward [Line Items] |
Net operating loss carryforward, expiration date | 2031

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- Definition Tax Credit Carryforwards Expiration Year + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition The amount of the tax credit carryforward available to reduce future taxable income under enacted tax laws. + References No definition available. + Details
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Namespace Prefix: | snps_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The expiration date of each operating loss carryforward included in total operating loss carryforwards, or the applicable range of such expiration dates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Details
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Period Type: | duration