v3.25.2
Cover Page - shares
6 Months Ended
Jun. 30, 2025
Jul. 01, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-37835  
Registrant Name Indivior PLC  
Entity Incorporation, State or Country Code X0  
Entity Tax Identification Number 98-1204773  
Entity Address, Address Line One 10710 Midlothian Turnpike Suite 125  
Entity Address, City or Town North Chesterfield  
Entity Address, State or Province VA  
Entity Address, Postal Zip Code 23235  
City Area Code 804  
Local Phone Number 379-1040  
Title of 12(b) Security Ordinary shares, $0.50 nominal value per share  
Trading Symbol INDV  
Security Exchange Name NASDAQ  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   124,769,820
Central Index Key 0001625297  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Amendment Flag false