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DISCONTINUED OPERATIONS - Transition Services and Supply Agreement Narrative (Details) - WK Kellogg Co - Spinoff $ in Millions | 3 Months Ended
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Mar. 30, 2024 USD ($)
Transition Services Agreement (TSA) |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense | $ 47
Discontinued Operation, Period of Continuing Involvement after Disposal | 2 years
Transition Services Agreement (TSA) | COGS |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense | $ 33
Transition Services Agreement (TSA) | Selling, General and Administrative Expenses |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense | $ 14
Supply Agreement |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Discontinued Operation, Period of Continuing Involvement after Disposal | 3 years
Supply Agreement | Sales |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Revenue | $ 15
Supply Agreement | COGS |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense | $ 13

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- Definition Period of expected continuing involvement with a discontinued operation after the disposal date, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-4B + Details
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