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Cover
 6 Months Ended
Mar. 31, 2025
Entity Addresses [Line Items]  
Document Type S-1
Amendment Flag false
Entity Registrant Name Aether Holdings, Inc.
Entity Central Index Key 0002026353
Entity Tax Identification Number 35-2818803
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 1441 Broadway
Entity Address, Address Line Two 30th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10018
City Area Code (347)
Local Phone Number 363–0886
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 1441 Broadway
Entity Address, Address Line Two 30th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10018
City Area Code (347)
Local Phone Number 363–0886
Contact Personnel Name Nicolas Lin