XML 17 R1.htm IDEA: XBRL DOCUMENT v3.24.0.1
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2023
Feb. 15, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-35676    
Entity Registrant Name PROTHENA CORPORATION PUBLIC LIMITED COMPANY    
Entity Incorporation, State or Country Code L2    
Entity Tax Identification Number 98-1111119    
Entity Address, Address Line One 77 Sir John Rogerson’s Quay, Block C    
Entity Address, Address Line Two Grand Canal Docklands    
Entity Address, City or Town Dublin 2,    
Entity Address, Postal Zip Code D02 VK60,    
Entity Address, Country IE    
Country Region 353    
City Area Code 1    
Local Phone Number 236-2500    
Title of 12(b) Security Ordinary Shares, par value $0.01 per share    
Trading Symbol PRTA    
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 [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 2,900,000,000
Entity Ordinary Shares Outstanding   53,720,455  
Documents Incorporated by Reference
Portions of the registrant’s Proxy Statement to be delivered to shareholders in connection with the registrant’s Annual General Meeting of Shareholders to be held on May 14, 2024, are incorporated by reference into Part III of this Form 10-K. The registrant intends to file its Proxy Statement within 120 days after its fiscal year ended December 31, 2023.
    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001559053