v3.26.1
EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2026
Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share Table
Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Computation of Earnings (Loss) per Share(In millions, except per share data)
Net (loss) income attributable to Olin Corporation$(13.3)$(1.3)$(96.3)$0.1 
Weighted-average common shares - basic113.9 114.9 113.8 115.1 
Dilutive effect of stock-based compensation— — — 0.8 
Weighted-average common shares - diluted113.9 114.9 113.8 115.9 
Earnings (loss) per common share attributable to Olin Corporation:
Basic$(0.12)$(0.01)$(0.85)$— 
Diluted$(0.12)$(0.01)$(0.85)$—