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INVENTORIES (Tables)
3 Months Ended
Mar. 29, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories Inventories consisted of the following:
March 29, 2020December 29, 2019
 (In thousands)
Raw materials and work-in-process$788,229  $800,749  
Finished products412,684  425,919  
Operating supplies81,503  82,447  
Maintenance materials and parts79,942  74,420  
Total inventories$1,362,358  $1,383,535