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INVENTORIES
 3 Months Ended
Mar. 31, 2024
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories consisted of the following:
March 31, 2024December 31, 2023
 (In thousands)
Raw materials and work-in-process$1,091,773 $1,158,467 
Finished products587,550 642,028 
Operating supplies73,450 75,530 
Maintenance materials and parts109,216 109,374 
Total inventories$1,861,989 $1,985,399