| Cover | Nov. 24, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Nov. 24, 2020 |
| Entity Registrant Name | THE HAIN CELESTIAL GROUP, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 0-22818 |
| Entity Tax Identification Number | 22-3240619 |
| Entity Address, Address Line One | 1111 Marcus Avenue |
| Entity Address, City or Town | Lake Success |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11042 |
| City Area Code | 516 |
| Local Phone Number | 587-5000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $.01 per share |
| Trading Symbol | HAIN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000910406 |
| Amendment Flag | false |
