v2.4.0.6

Employee Benefit Plans (Equity Compensation Plans - 1994 Non-Employee Directors Stock Option Plan) (Narrative) (Details) (1994 Non-Employee Directors Stock Option Plan [Member]) | 12 Months Ended
--- | ---
Oct. 31, 2011
1994 Non-Employee Directors Stock Option Plan [Member] |
Aggregate stock options outstanding under 1994 director plan | 333,332

X
- Definition Aggregate stock options outstanding under director plan + References No definition available. + Details
Name: | snps_AggregateStockOptionsOutstandingUnderDirectorPlan
Namespace Prefix: | snps_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration