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Document and Entity Information - USD ($)
 12 Months Ended
Jun. 30, 2017
Aug. 23, 2017
Dec. 31, 2016
Entity Registrant Name PHIBRO ANIMAL HEALTH CORP    
Entity Central Index Key 0001069899    
Trading Symbol pahc    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Current Fiscal Year End Date --06-30    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 540,780,431
Document Type 10-K    
Document Period End Date Jun. 30, 2017    
Amendment Flag false    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Class A common stock      
Entity Common Stock, Shares Outstanding   19,261,789  
Class B common stock      
Entity Common Stock, Shares Outstanding   20,626,836