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RECENT ACCOUNTING PRONOUNCEMENTS Recent Accounting Pronouncements (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2017 | Sep. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Document Period End Date |  | Sep. 30, 2017 |
Excess tax benefit recorded to equity section of balance sheet |  | $ 0.0 | $ 3.4
Adjustments for New Accounting Pronouncement [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Excess tax benefit recorded to tax expense | $ 0.1 | 1.2 |
Excess tax benefit recorded to equity section of balance sheet |  |  | $ (3.4)
Previously Unrecognized Tax Benefits Due to NOL Carryforwards [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative Effect on Retained Earnings, Net of Tax |  | (2.1) |
Forfeiture Rate Estimate Adjustment [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative Effect on Retained Earnings, Net of Tax |  | (1.6) |
Deferred Tax Assets [Member] | Previously Unrecognized Tax Benefits Due to NOL Carryforwards [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative Effect on Retained Earnings, Net of Tax |  | (25.6) |
Valuation Allowance, Operating Loss Carryforwards [Member] | Previously Unrecognized Tax Benefits Due to NOL Carryforwards [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative Effect on Retained Earnings, Net of Tax |  | $ (23.5) |

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- Definition Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=65896087&loc=d3e11374-113907 + Details
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