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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2024
Feb. 26, 2025
Jun. 28, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-37977    
Entity Registrant Name AVADEL PHARMACEUTICALS PLC    
Entity Incorporation, State or Country Code L2    
Entity Tax Identification Number 98-1341933    
Entity Address, Address Line One 10 Earlsfort Terrace    
Entity Address, City or Town Dublin 2    
Entity Address, Country IE    
Entity Address, Postal Zip Code D02 T380    
Country Region 353    
City Area Code 1    
Local Phone Number 901-5201    
Title of 12(b) Security Ordinary Shares, nominal value $0.01 per share    
Trading Symbol AVDL    
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     $ 1,342,171,790
Entity Common Stock, Shares Outstanding   96,629,435  
Entity Central Index Key 0001012477    
Amendment Flag false    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2024