Document And Entity Information - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 16, 2017	Dec. 31, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Trading Symbol	HAIN
Entity Registrant Name	HAIN CELESTIAL GROUP INC.
Entity Central Index Key	0000910406
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	No
Entity Common Stock, Shares Outstanding		103,697,237
Entity Public Float			$ 4,107,285