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GOODWILL AND INTANGIBLES (Details 1) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Goodwill [Line Items] |  |  |  |
Goodwill | $ 2,119.0 | $ 2,146.1 | $ 2,118.0 | $ 2,174.1
Acquisition activity |  | (28.8) |  |
Foreign currency translation adjustment | 1.0 | 0.8 |  |
Chlor Alkali Products and Vinyls Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill | 1,832.1 | 1,854.8 | 1,831.3 | 1,877.5
Acquisition activity |  | (23.3) |  |
Foreign currency translation adjustment | 0.8 | 0.6 |  |
Epoxy Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill | 286.9 | 291.3 | $ 286.7 | $ 296.6
Acquisition activity |  | (5.5) |  |
Foreign currency translation adjustment | $ 0.2 | $ 0.2 |  |

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