Document and Entity Information - shares	6 Months Ended
	Dec. 31, 2018	Jan. 30, 2019
Entity Registrant Name	PHIBRO ANIMAL HEALTH CORP
Entity Central Index Key	0001069899
Trading Symbol	pahc
Current Fiscal Year End Date	--06-30
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Class A common stock
Entity Common Stock, Shares Outstanding		20,283,777
Class B common stock
Entity Common Stock, Shares Outstanding		20,166,034