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Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Aug. 31, 2025
Oct. 31, 2025
Feb. 28, 2025
Document And Entity Information [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --08-31    
Document Fiscal Year Focus 2025    
Document Period End Date Aug. 31, 2025    
Document Transition Report false    
Entity File Number 001-11107    
Entity Registrant Name Franklin Covey Co.    
Entity Incorporation, State or Country Code UT    
Entity Tax Identification Number 87-0401551    
Entity Address, Address Line One 13907 South Minuteman Drive, Suite 500    
Entity Address, City or Town Draper    
Entity Address, State or Province UT    
Entity Address, Postal Zip Code 84020    
City Area Code 801    
Local Phone Number 817-1776    
Title of 12(b) Security Common Stock, $.05 Par Value    
Trading Symbol FC    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   12,155,832  
Entity Public Float     $ 349.5
Documents Incorporated By Reference Parts of the Registrant's Definitive Proxy Statement for the Annual Meeting of Shareholders, which is scheduled to be held on January 23, 2026, are incorporated by reference in Part III of this Form 10-K.    
Amendment Flag false    
Entity Central Index Key 0000886206    
Auditor Firm ID 34    
Auditor Name Deloitte & Touche LLP    
Auditor Location Salt Lake City, Utah    
Document Financial Statement Error Correction [Flag] false