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Document And Entity Information - shares
 3 Months Ended
Sep. 30, 2015
Nov. 02, 2015
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1  
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 Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Common Stock, Shares Outstanding   102,961,807