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SHAREHOLDERS' EQUITY (Details of Accumulated Other Comprehensive Income (Loss) Components) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | $ 0.1 |  |  | $ 0.0 |  |  | $ 0.0 | $ 0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (221.5) |  |  | 6.8 |  |  | (208.9) | 19.7
Foreign Currency Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax |  |  |  |  |  |  | (228.1) | 0.0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax |  |  |  |  |  |  | (228.1) | 0.0
Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |  |  |  |  |
Amount of gain/(loss) recognized in income on derivative | 0.1 |  |  | 0.0 |  |  | 0.0 | 0.0
Accumulated Defined Benefit Plans Adjustment [Member] |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 6.5 | $ 6.5 | $ 6.2 | 6.8 | $ 6.5 | $ 6.4 |  |
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |  |  |  |  |
Prior service credits | (0.1) |  |  | (0.2) |  |  | (0.5) | (0.4)
Net actuarial loss | 6.6 |  |  | 7.0 |  |  | 19.7 | 20.1
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax | $ 6.5 |  |  | $ 6.8 |  |  | $ 19.2 | $ 19.7

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