INVENTORIES (Details) - USD ($) $ in Thousands	Jun. 26, 2022	Dec. 26, 2021
Reclassification [Line Items]
Raw materials and work-in-process	$ 1,173,485	$ 1,034,518
Finished products	490,986	369,292
Operating supplies	87,005	87,332
Maintenance materials and parts	88,986	84,516
Total inventories	$ 1,840,462	1,575,658
Changes to Previously Reported
Reclassification [Line Items]
Raw materials and work-in-process		(10,200)
Finished products		(10,400)
Operating supplies		10,700
Maintenance materials and parts		$ 9,900

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

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