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DESCRIPTION OF THE COMPANY AND BASIS OF PRESENTATION (Tables)
 12 Months Ended
Dec. 28, 2024
Accounting Policies [Abstract]  
Schedule Of Allocated Expense From Former Parent
The allocation of expenses from Kellanova to WK Kellogg Co was reflected as follows in the Consolidated Financial Statements for the years-ended December 30, 2023 and December 31, 2022:
(millions)20232022
Cost of goods sold$128 $172 
Selling, general and administrative233 308 
Other (income) expense, net(43)106 
Total$318 $586