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Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Feb. 28, 2025
Jun. 30, 2024
Document And Entity Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Trading Symbol AMRN    
Entity Registrant Name AMARIN CORP PLC\UK    
Entity Central Index Key 0000897448    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Small Business false    
Entity Public Float     $ 282.7
Entity File Number 0-21392    
Entity Incorporation, State or Country Code X0    
Entity Address, Address Line One One Central Plaza    
Entity Tax Identification Number 00-0000000    
Entity Address, Address Line Two 5th Floor    
Entity Address, Address Line Three 36 Dame Street    
Entity Address, City or Town Dublin    
Entity Address, Postal Zip Code 2    
Entity Address, Country IE    
City Area Code 353 (0) 1    
Local Phone Number 6699 020    
Document Annual Report true    
Document Transition Report false    
Title of each class American Depositary Shares (ADS(s)), each ADSrepresenting the right to receive one (1) Ordinary Share ofAmarin Corporation plc    
Name of each exchange on which registered NASDAQ    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

Certain information required to be disclosed in Part III of this Annual Report on Form 10-K is incorporated by reference from the registrant’s definitive proxy statement to be filed not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.

   
Auditor Firm ID 42    
Auditor Name Ernst & Young LLP    
Auditor Location Iselin, New Jersey    
Auditor Opinion

Opinion on the Financial Statements

 

We have audited the accompanying consolidated balance sheets of Amarin Corporation plc (the Company) as of December 31, 2024 and 2023, the related consolidated statements of operations, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2024, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with U.S. generally accepted accounting principles.

 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated March 12, 2025 expressed an unqualified opinion thereon.

   
American Depositary Shares      
Document And Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   405,383,488  
Ordinary Shares      
Document And Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   8,802,808