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Acquisitions (Pro Forma Information) (Details) - Valley Proteins - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jul. 02, 2022 | Jul. 03, 2021 | Jul. 02, 2022 | Jul. 03, 2021
Business Acquisition [Line Items] |  |  |  |
Net sales | $ 1,722,803 | $ 1,394,771 | $ 3,306,982 | $ 2,637,589
Net income | $ 195,533 | $ 185,723 | $ 358,377 | $ 326,795

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