v3.25.4
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Feb. 03, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 001-12400    
Entity Registrant Name INCYTE CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 94-3136539    
Entity Address, Address Line One 1801 Augustine Cut-Off    
Entity Address, City or Town Wilmington    
Entity Address, State or Province DE    
Entity Address, Postal Zip Code 19803    
City Area Code 302    
Local Phone Number 498-6700    
Title of 12(b) Security Common Stock, $.001 par value per share    
Trading Symbol INCY    
Security Exchange Name NASDAQ    
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 false    
Entity Shell Company false    
Entity Public Float     $ 11.2
Entity Common Stock, Shares Outstanding   199,014,486  
Documents Incorporated by Reference
Items 10 (as to directors and Section 16(a) Beneficial Ownership Reporting Compliance), 11, 12, 13 and 14 of Part III incorporate by reference information from the registrant’s proxy statement to be filed with the Securities and Exchange Commission in connection with the solicitation of proxies for the registrant’s 2026 Annual Meeting of Stockholders to be held on June 8, 2026.
    
Entity Central Index Key 0000879169    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false