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Description of Business	3 Months Ended
Description of Business	Jan. 31, 2016
Accounting Policies [Abstract]
Description of Business	Description of Business Synopsys, Inc. (Synopsys or the Company) is a global leader in providing software, intellectual property and services used by designers along the entire silicon to software spectrum, from engineers creating advanced semiconductors to software developers seeking to ensure the quality and security of their products. The Company is a global leader in supplying the electronic design automation (EDA) software that engineers use to design and test integrated circuits, also known as chips. The Company also offers intellectual property (IP) products, which are pre-designed circuits that engineers use as components of larger chip designs rather than designing those circuits themselves. The Company provides software and hardware used to develop the electronic systems that incorporate chips and the software that runs on them. To complement these offerings, which are sold primarily to semiconductor and electronics companies, the Company provides technical services to support these solutions and help its customers develop chips and electronic systems. The Company is also a leading provider of software tools that developers use to improve the quality and security of software code in a wide variety of industries, including electronics, financial services, energy, and industrials.