Commitments and Contingencies - Minimum Lease Commitments (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Minimum lease payments, 2015	$ 40,548
Minimum lease payments, 2016	40,862
Minimum lease payments, 2017	35,844
Minimum lease payments, 2018	30,032
Minimum lease payments, 2019	29,376
Minimum lease payments, thereafter	196,252
Minimum lease payments, total	372,914
Sublease income, 2015	1,661
Sublease income, 2016	1,584
Sublease income, 2017	771
Sublease income, 2018	626
Sublease income, 2019	640
Sublease income, thereafter	1,204
Sublease income, total	6,486
Net, 2015	38,887snps_NetLeasePaymentDueWithinOneYear
Net, 2016	39,278snps_NetLeasePaymentDueWithinTwoYears
Net, 2017	35,073snps_NetLeasePaymentDueWithinThreeYears
Net, 2018	29,406snps_NetLeasePaymentDueWithinFourYears
Net, 2019	28,736snps_NetLeasePaymentDueWithinFiveYears
Net, Thereafter	195,048snps_NetLeasePaymentDueThereafter
Net, Total	$ 366,428snps_NetLeasePaymentDue

Net lease payment due

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Net lease payment due within five years

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Net lease payment due within four years

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Net lease payment due within one year

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Net lease payment due within three years

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Net lease payment due within two years

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Operating Leases, Future Minimum Sublease Rentals, Current

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Operating Leases, Rent Expense, Sublease Rentals, Due in Four Years

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Operating Leases, Rent Expense, Sublease Rentals, Due in Three Years

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Operating Leases, Rent Expense, Sublease Rentals, Due in Two Years

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Operating Leases, Rent Expense, Sublease Rentals, Due Thereafter

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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