| Sales | 6,540.1a | 6,833a | 9,376.2a |
| Operating expenses | — | — | — |
| Cost of goods sold | -5,802.6a | -5,667.5a | -7,194.3a |
| Selling and administrative | -408.5a | -406.7a | -393.9a |
| Restructuring charges | -33.3a | -89.6a | -25.3a |
| Other operating income | 0.8a | 42.9a | 16.3a |
| Operating income | 296.5a | 712.1a | 1,779a |
| Interest expense | -184.5a | -181.1a | -143.9a |
| Interest income | 3.7a | 4.3a | 2.2a |
| Non-operating pension income | 26a | 24a | 38.7a |
| Income before taxes | 141.7a | 559.3a | 1,676a |
| Income tax provision | -36.7a | -107.3a | -349.1a |
| Net income | 105a | 452a | 1,326.9a |
| Net loss attributable to noncontrolling interests | -3.6a | -8.2a | |
| Net income attributable to Olin Corporation | 108.6a | 460.2a | 1,326.9a |