v3.26.3
EARNINGS PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2026
Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share Table
Three Months Ended September 30,Nine Months Ended September 30,
2026202520262025
Computation of Earnings (Loss) per Share(In millions, except per share data)
Net income (loss) attributable to Olin Corporation$14.4 $42.8 $(81.9)$42.9 
Weighted-average common shares - basic114.0 114.4 113.9 114.9 
Dilutive effect of stock-based compensation1.0 0.7 — 0.7 
Weighted-average common shares - diluted115.0 115.1 113.9 115.6 
Earnings (loss) per common share attributable to Olin Corporation:
Basic$0.13 $0.37 $(0.72)$0.37 
Diluted$0.13 $0.37 $(0.72)$0.37