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Operating Gains and Non-Operating Gains (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 28, 2022 | Jan. 01, 2023 | Mar. 31, 2022 | Dec. 29, 2024 | Dec. 31, 2023 | Jan. 01, 2023 | Jan. 31, 2022
Operating Gain [Abstract] |  |  |  |  |  |  |
Gain on disposal of assets |  |  |  | $ (43) | $ (88) | $ 0 |
Insurance recoveries |  |  |  | (9) | (5) | (6) |
Gain on sale of businesses |  |  |  | 0 | (1) | (417) |
Other operating gains |  |  |  | 8 | 11 | 6 |
Total operating gains |  |  |  | 60 | 105 | 429 |
Non-operating gains: |  |  |  |  |  |  |
(Gain) loss on nonqualified retirement plan assets |  |  |  | (17) | (15) | 26 |
Gain on the sale/dilution of equity method investments |  |  |  | 0 | 0 | (56) |
Impairment of investment |  |  |  | 0 | 0 | 40 |
Net pension and postretirement benefits cost (benefit) |  |  |  | 10 | 10 | (28) |
Other non-operating (gains) losses |  |  |  | (2) | 1 | 1 |
Total non-operating gains |  |  |  | 9 | 3 | 18 |
Business dispositions |  |  |  | (15) | (11) | 414 |
Monarch |  |  |  |  |  |  |
Non-operating gains: |  |  |  |  |  |  |
Ownership (as a percent) | 33.00% |  |  |  |  |  | 50.00%
Monarch |  |  |  |  |  |  |
Non-operating gains: |  |  |  |  |  |  |
Gain on the sale/dilution of equity method investments | $ (52) |  |  |  |  |  |
Norson Holding, S. de R.L. de C.V. |  |  |  |  |  |  |
Non-operating gains: |  |  |  |  |  |  |
Impairment of investment |  |  | $ (40) |  |  |  |
Hog Farms |  |  |  |  |  |  |
Operating Gain [Abstract] |  |  |  |  |  |  |
Gain on disposal of assets |  |  |  | (32) |  |  |
Murphy Family Farms |  |  |  |  |  |  |
Operating Gain [Abstract] |  |  |  |  |  |  |
Gain on disposal of assets |  |  |  | $ (6) |  |  |
Vernon, California Plant |  |  |  |  |  |  |
Operating Gain [Abstract] |  |  |  |  |  |  |
Gain on disposal of assets |  |  |  |  | $ (86) |  |
Saratoga |  |  |  |  |  |  |
Non-operating gains: |  |  |  |  |  |  |
Business dispositions |  |  |  |  |  | $ 417 |
Norson Holding, S. de R.L. de C.V. |  |  |  |  |  |  |
Non-operating gains: |  |  |  |  |  |  |
Gain on the sale/dilution of equity method investments |  | $ (4) |  |  |  |  |

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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482130/360-10-45-5 + Details
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