v3.26.1
Cover
Aug. 27, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 27, 2026
Entity File Number 001-43461
Entity Registrant Name JATT III ACQUISITION CORP
Entity Central Index Key 0002145659
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 153 Central Avenue
Entity Address, Address Line Two C/O 56
Entity Address, City or Town Westfield
Entity Address, State or Province NJ
Entity Address, Postal Zip Code 07091
City Area Code 201
Local Phone Number 688-0364
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security ordinary shares, par value $0.0001 per share
Trading Symbol JTTT
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false