Document And Entity Information
Feb. 22, 2024
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Feb. 22, 2024
Entity Registrant Name Karuna Therapeutics, Inc.
Entity Central Index Key 0001771917
Entity Emerging Growth Company false
Entity File Number 001-38958
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 27-0605902
Entity Address, Address Line One 99 High Street, Floor 26
Entity Address, City or Town Boston
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02110
City Area Code 857
Local Phone Number 449-2244
Entity Information, Former Legal or Registered Name Not Applicable
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 KRTX
Security Exchange Name NASDAQ