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EARNINGS PER SHARE (Tables) | 6 Months Ended
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Jun. 30, 2024
Earnings Per Share [Abstract] |
Basic and Diluted Earnings Per Share Table |
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Computation of Net Income per Share | ($ in millions, except per share data)
Net income attributable to Olin Corporation | $ | 74.2 |  |  | $ | 146.9 |  |  | $ | 122.8 |  |  | $ | 303.2 |
Basic shares | 118.5 |  |  | 127.4 |  |  | 119.1 |  |  | 129.2 |
Basic net income attributable to Olin Corporation per share | $ | 0.63 |  |  | $ | 1.15 |  |  | $ | 1.03 |  |  | $ | 2.35 |
Diluted shares: |  |  |  |  |  |  |
Basic shares | 118.5 |  |  | 127.4 |  |  | 119.1 |  |  | 129.2 |
Stock-based compensation | 1.7 |  |  | 3.0 |  |  | 1.9 |  |  | 3.2 |
Diluted shares | 120.2 |  |  | 130.4 |  |  | 121.0 |  |  | 132.4 |
Diluted net income attributable to Olin Corporation per share | $ | 0.62 |  |  | $ | 1.13 |  |  | $ | 1.01 |  |  | $ | 2.29 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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