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EARNINGS PER SHARE (Tables)
9 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share Reconciliation
A reconciliation of net income and shares used to calculate basic and diluted earnings per share is as follows (dollars in millions and shares in thousands):
Three months endedNine months ended
September 30,September 30,
 2024202320242023
Net income for basic and diluted earnings per share$9.3 $167.3 $237.9 $240.2 
Shares:  
Weighted average shares outstanding for basic earnings per share105,101 112,689 107,265 113,836 
Effect of dilutive securities on weighted average shares:  
Amounts related to employee benefit plans2,030 1,773 1,813 1,777 
Weighted average shares outstanding for diluted earnings per share107,131 114,462 109,078 115,613