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ACQUISITION (Tables)
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9 Months Ended |
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Sep. 30, 2012
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KA Steel [Member]
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| Business Acquisition [Line Items] |
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| Schedule of Purchase Price Allocation [Table Text Block] |
| | | | | | August 22, 2012 | | ($ in millions) | Total current assets | $ | 126.0 |
| Property, plant and equipment | 23.9 |
| Intangible assets | 139.5 |
| Total assets acquired | 289.4 |
| Total current liabilities | 63.2 |
| Other liabilities | 10.1 |
| Total liabilities assumed | 73.3 |
| Net identifiable assets acquired | 216.1 |
| Goodwill | 124.9 |
| Fair value of net assets acquired | $ | 341.0 |
| Supplemental Data | | Cash paid | $ | 338.5 |
| Olin trade accounts receivable from KA Steel | 2.5 |
| Total fair value of consideration | $ | 341.0 |
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| Business Acquisition, Pro Forma Information [Table Text Block] |
| | | | | | | | | | | | | | | | | | Three Months Ended
September 30, | | Nine Months Ended September 30, | | 2012 | | 2011 | | 2012 | | 2011 | | ($ in millions, except per share data) | Sales | $ | 686.9 |
| | $ | 656.2 |
| | $ | 1,879.8 |
| | $ | 1,803.4 |
| Net income | 39.3 |
| | 44.5 |
| | 124.9 |
| | 220.4 |
| Net income per common share: | | | | | | | | Basic | $ | 0.49 |
| | $ | 0.56 |
| | $ | 1.56 |
| | $ | 2.76 |
| Diluted | $ | 0.48 |
| | $ | 0.55 |
| | $ | 1.54 |
| | $ | 2.73 |
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SunBelt [Member]
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| Business Acquisition [Line Items] |
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| Schedule of Purchase Price Allocation [Table Text Block] |
| | | | | | February 28, 2011 | | ($ in millions) | Total current assets | $ | 37.6 |
| Property, plant and equipment | 87.4 |
| Deferred income taxes | 0.4 |
| Other assets | 5.8 |
| Total assets acquired | 131.2 |
| Total current liabilities | 42.7 |
| Long-term debt | 75.1 |
| Other liabilities | 27.6 |
| Total liabilities assumed | 145.4 |
| Less: Investment in SunBelt | (0.8 | ) | Net liabilities assumed | (13.4 | ) | Liabilities for uncertainties | 48.3 |
| Gain on remeasurement of investment in SunBelt | (181.4 | ) | Goodwill | 327.1 |
| Fair value of total consideration | $ | 180.6 |
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| Business Acquisition, Pro Forma Information [Table Text Block] |
| | | | | | Nine Months Ended | | September 30, 2011 | | ($ in millions, except per share data) | Sales | $ | 1,541.6 |
| Net income | 121.9 |
| Net income per common share: | | Basic | $ | 1.53 |
| Diluted | $ | 1.51 |
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