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RESTRUCTURING - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 29, 2025 | Mar. 30, 2024
Restructuring Cost and Reserve [Line Items] |  |
Program costs to date | $ 149 |
Restructuring charges | $ 6 | $ 101
Minimum [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and Related Activities, Description | 1 |
Maximum [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and Related Activities, Description | 5 |
North America |  |
Restructuring Cost and Reserve [Line Items] |  |
Program costs to date | $ 65 |
Restructuring charges | 0 | 31
Employee Related Costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Program costs to date | 48 |
Restructuring charges | 3 | 37
Asset related costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Program costs to date | 23 |
Restructuring charges | 0 | 4
Other Restructuring [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 3 |
North America Frozen Supply Chain Network Reconfiguration |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 70 |
North America Frozen Supply Chain Network Reconfiguration | COGS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1 | 31
North America Frozen Supply Chain Network Reconfiguration | Employee Related Costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 10 |
North America Frozen Supply Chain Network Reconfiguration | Asset related costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 50 |
North America Frozen Supply Chain Network Reconfiguration | Other Restructuring [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 10 |
European Cereal Supply Chain Network Reconfiguration |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 120 |
Restructuring charges | 6 | $ 70
European Cereal Supply Chain Network Reconfiguration | Employee Related Costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 50 |
European Cereal Supply Chain Network Reconfiguration | Asset related costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | 40 |
European Cereal Supply Chain Network Reconfiguration | Other Restructuring [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, expected cost | $ 30 |

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- Definition Description of a specific restructuring plan and related activities including the facts and circumstances leading to the restructuring or decision to exit an activity, and the expected completion date. This concept and related items would be utilized for each plan if multiple exit plans have been implemented in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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- Definition Amount of costs incurred to date for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.b.1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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