v3.25.2
Cover
Aug. 04, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Aug. 04, 2025
Entity Registrant Name IAC Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-39356
Entity Tax Identification Number 84-3727412
Entity Address, Address Line One 555 West 18th Street,
Entity Address, City or Town New York,
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10011
City Area Code 212
Local Phone Number 314-7300
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 $0.0001
Trading Symbol IAC
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001800227
Amendment Flag false