Description of Business	12 Months Ended
	Aug. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	DESCRIPTION OF BUSINESSFactSet Research Systems Inc. and its wholly-owned subsidiaries (collectively, the "Company" or "FactSet") is a global provider of integrated financial information, analytical applications and industry-leading services for the investment and corporate communities. For over 40 years, global financial professionals have utilized the Company’s content and multi-asset class solutions across each stage of the investment process. FactSet’s goal is to provide a seamless user experience spanning idea generation, research, portfolio construction and analysis, trade execution, performance measurement, risk management, and reporting, in which the Company serves the front, middle, and back offices to drive productivity and improved performance. FactSet’s flexible, open data and technology solutions can be implemented both across the investment portfolio lifecycle or as standalone components serving different workflows in an organization. FactSet is focused on growing the business through three segments: the Americas (formerly known as U.S.), EMEA (Europe and Africa, formerly known as Europe), and Asia Pacific. Within each of the segments, the Company primarily delivers insight and information through the four workflow solutions of Research, Analytics and Trading, Content and Technology Solutions ("CTS"), and Wealth. FactSet currently serves a wide range of financial professionals, which include but are not limited to portfolio managers, investment research professionals, investment bankers, risk and performance analysts, wealth advisors, and corporate clients. FactSet provides both insights on global market trends and intelligence on companies and industries, as well as capabilities to monitor portfolio risk and performance and execute trades. The Company combines dedicated client service with open and flexible technology offerings, such as a configurable desktop and mobile platform, comprehensive data feeds, and open marketplace and digital portals and application programming interface ("APIs"). The Company's revenue is primarily derived from subscriptions to products and services such as workstations, portfolio analytics, enterprise data, and research management.