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INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Income Tax Contingency [Line Items] |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions | $ 77.5 | $ 76.3
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits | 25.3 | 25.6
Deferred Tax Assets, Deferred Income | 23.3 | 24.2
Deferred Tax Assets, Goodwill and Intangible Assets | 11.6 | 13.0
Deferred Tax Assets, Operating Loss Carryforwards | 2,118.8 | 2,362.4
Deferred Tax Assets, Property, Plant and Equipment | 13.3 | 0.0
Deferred Tax Assets, State Taxes | 68.2 | 74.2
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other | 36.8 | 30.4
Deferred Tax Assets, Gross | 2,374.8 | 2,606.1
Deferred Tax Assets, Valuation Allowance | (1,287.3) | (1,983.1)
Deferred Tax Assets, Net of Valuation Allowance | 1,087.5 | 623.0
Deferred Tax Liabilities, Property, Plant and Equipment | 0.0 | (1.5)
Deferred Tax Liabilities Investment In Ventures | (141.2) | (137.5)
Deferred Tax Liabilities, Intercompany Notes | 465.7 | 465.7
Deferred Tax Liabilities Other Assets | (15.8) | (18.3)
Deferred Tax Liabilities, Net | (622.7) | (623.0)
Deferred Tax Assets, Net | $ 464.8 | $ 0.0

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