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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2023
INVENTORIES [Abstract]  
Inventories

in millions

2023

2022

Inventories

Finished products 1

$          494.4 

$        439.3 

Raw materials

51.2 

63.4 

Products in process

6.5 

6.0 

Operating supplies and other

63.5 

70.6 

Total

$          615.6 

$        579.3 

1

Includes inventories encumbered by volumetric production payments (see Note 2), as follows: December 31, 2023 — $3.6 million; December 31, 2022 — $3.6 million.