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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 6 Months Ended
Jun. 30, 2024
Accounting Policies [Abstract]  
Schedule of Inventory, Current
Inventories and supplies are stated at the lower of cost or net realizable value. Inventories are as follows:
in millionsJune 30
2024		December 31
2023		June 30
2023
Finished products$514.2 $494.4 $455.3 
Raw materials58.8 51.2 69.1 
Products in process8.8 6.5 7.2 
Operating supplies and other68.5 63.5 63.0 
Total inventories$650.3 $615.6 $594.6 
Results from Discontinued Operations Results from discontinued operations are as follows:
in millionsThree Months Ended
June 30		Six Months Ended
June 30
2024202320242023
Pretax loss$(2.7)$(4.9)$(5.0)$(7.9)
Income tax benefit 0.7 1.2 1.3 2.1 
Loss on discontinued operations, net of tax$(2.0)$(3.7)$(3.7)$(5.8)
Weighted-Average Common Shares Outstanding Assuming Dilution
Earnings per share are computed by dividing net earnings by the weighted-average common shares outstanding (basic EPS) or weighted-average common shares outstanding assuming dilution (diluted EPS), as set forth below:
Three Months Ended
June 30		Six Months Ended
June 30
in millions2024202320242023
Weighted-average common shares outstanding132.4133.2132.4133.2
Dilutive effect of
Stock-Only Stock Appreciation Rights0.20.20.20.2
Other stock compensation awards0.50.40.50.3
Weighted-average common shares outstanding, assuming dilution133.1133.8133.1133.7
Antidilutive Common Stock Equivalents The number of antidilutive common stock equivalents for which the exercise price exceeds the weighted-average market price is as follows:
Three Months Ended
June 30		Six Months Ended
June 30
in millions2024202320242023
Antidilutive common stock equivalents0.10.10.10.1