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DISPOSITIONS AND SPECIAL CHARGES - Discontinued Operations (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Loss from discontinued operations, net of tax | $ (35.7) | $ (49.5) | $ (75.8)
Net loss per share - basic and diluted (in dollars per share) | $ (0.96) | $ (1.33) | $ (2.04)
NATG | Disposed of by Sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Net sales | $ 117.0 | $ 521.6 | $ 1,664.6
Cost of sales | 102.9 | 461.6 | 1,516.8
Gross profit | 14.1 | 60.0 | 147.8
Selling, distribution and administrative expenses | 22.1 | 96.9 | 221.0
Special charges, net | 30.6 | 11.5 | 2.6
Operating loss from discontinued operations | (38.6) | (48.4) | (75.8)
Foreign currency exchange loss | 0.8 | 0.0 | 1.8
Interest and other expense (income), net | 0.0 | 0.3 | 0.3
Loss of discontinued operations before income taxes | (39.4) | (48.7) | (77.9)
Provision (benefit) for income tax | (3.7) | 0.8 | (2.1)
Loss from discontinued operations, net of tax | $ (35.7) | $ (49.5) | $ (75.8)

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