v3.25.2
Document and Entity Information
Jul. 31, 2025
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001959348
Document Type 8-K
Document Period End Date Jul. 31, 2025
Entity Registrant Name WK Kellogg Co
Entity Incorporation State Country Code DE
Entity File Number 001-41755
Entity Tax Identification Number 92-1243173
Entity Address, Address Line One One Kellogg Square
Entity Address, Address Line Two P.O. Box 3599
Entity Address, City or Town Battle Creek
Entity Address, State or Province MI
Entity Address, Postal Zip Code 49016-3599
City Area Code (269)
Local Phone Number 401-3000
Written Communications false
Soliciting Material true
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.0001 par value per share
Trading Symbol KLG
Security Exchange Name NYSE
Entity Emerging Growth Company false