v3.26.1
Cover
Aug. 28, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 28, 2026
Entity File Number 1-11869
Entity Registrant Name FactSet Research Systems Inc.
Entity Central Index Key 0001013237
Entity Tax Identification Number 13-3362547
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 45 Glover Avenue
Entity Address, City or Town Norwalk
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06850
City Area Code (203)
Local Phone Number 810-1000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock, $0.01 Par Value  
Title of 12(b) Security Common Stock, $0.01 Par Value
Trading Symbol FDS
Security Exchange Name NYSE
Common Stock 0. 01 Par Value 2 [Member]  
Title of 12(b) Security Common Stock, $0.01 Par Value
Trading Symbol FDS
Security Exchange Name NASDAQ