XML 17 R1.htm IDEA: XBRL DOCUMENT v3.21.2
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Oct. 31, 2021
Dec. 08, 2021
Apr. 30, 2021
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Oct. 31, 2021    
Current Fiscal Year End Date --10-31    
Document Transition Report false    
Entity File Number 0-19807    
Entity Registrant Name SYNOPSYS, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 56-1546236    
Entity Address, Address Line One 690 East Middlefield Road,    
Entity Address, City or Town Mountain View,    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94043    
City Area Code 650    
Local Phone Number 584-5000    
Title of 12(b) Security Common Stock (par value of $0.01 per share)    
Trading Symbol SNPS    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 27.5
Entity Common Stock, Shares Outstanding   153,438,336  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s Proxy Statement relating to the registrant’s 2022 Annual Meeting of Stockholders, scheduled to be held on April 12, 2022, are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Except as expressly incorporated by reference, the registrant’s Proxy Statement shall not be deemed to be part of this report.
    
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000883241