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COMMITMENTS AND CONTINGENCIES (Business Insurance Recoveries) (Details) - Cybersecurity Incident $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2017 USD ($)
Accrued Liabilities |  |
(Expenses incurred) | $ (164.0) |
Payments made | 88.4 |
Accrued Liabilities | (75.6) | $ (75.6)
Insurance Receivable |  |
Insurance receivable recorded | 50.0 |
(Payments received) | (15.0) | (15.0)
Insurance Receivable | $ 35.0 | $ 35.0

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