v3.26.1
Cover - USD ($)
$ in Billions
 12 Months Ended
Mar. 31, 2026
May 14, 2026
Sep. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Mar. 31, 2026    
Current Fiscal Year End Date --03-31    
Document Transition Report false    
Entity File Number 001-37873    
Entity Registrant Name e.l.f. Beauty, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 46-4464131    
Entity Address, Address Line One 601 12th Street, 14th Floor    
Entity Address, City or Town Oakland,    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94607    
City Area Code (510)    
Local Phone Number 778-7787    
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol ELF    
Security Exchange Name NYSE    
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 true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 5.2
Entity Common Stock, Shares Outstanding   59,440,526  
Documents Incorporated by Reference
Portions of the registrant’s Definitive Proxy Statement relating to the registrant’s 2026 annual meeting of stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K. Such Definitive Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the registrant's fiscal year ended March 31, 2026.
    
Amendment Flag false    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001600033