v3.25.2
EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2025
Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share Table
 Three Months Ended June 30,Six Months Ended June 30,
 2025202420252024
Computation of Earnings per Share($ in millions, except per share data)
Net (loss) income attributable to Olin Corporation$(1.3)$74.2 $0.1 $122.8 
Weighted-average common shares - basic114.9 118.5 115.1 119.1 
Dilutive effect of stock-based compensation— 1.7 0.8 1.9 
Weighted-average common shares - diluted114.9 120.2 115.9 121.0 
Earnings (loss) per common share attributable to Olin Corporation:
Basic$(0.01)$0.63 $— $1.03 
Diluted$(0.01)$0.62 $— $1.01