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INCOME TAXES (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Contingency [Line Items] |  |  |  |
Unrecognized Tax Benefits | $ 33.5 | $ 30.7 | $ 156.2 | $ 72.6
Undistributed Earnings of Foreign Subsidiaries | 0.0 | 0.0 |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 4,200.0 | 3,700.0 |  |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 7,200.0 | 6,900.0 |  |
Deferred Tax Assets, Tax Credit Carryforwards, Foreign | 5.8 |  |  |
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax | 0.0 | 251.2 |  |
Valuation Allowance, Deferred Tax Asset, Change in Amount | 1,100.0 |  |  |
Impact Of Tax Law Change | $ 407.5 | $ 149.1 | $ 0.0 |
Effective Income Tax Rate, Continuing Operations | 35.00% | 35.00% | 35.00% |
Current Fiscal Year End Date | --12-31 |  |  |
Deferred Tax Liabilities, Intercompany Notes | $ (465.7) | $ 0.0 |  |
Tax law change, remeasurement, amount | (407.5) | (149.1) | $ 0.0 |
Repeal of AMT, amount | (235.3) | 0.0 | $ 0.0 |
Other Noncurrent Assets [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Unrecognized Tax Benefits | 27.4 | 22.4 |  |
Other Liabilities [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Unrecognized Tax Benefits | 6.1 | 8.3 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | $ 2.1 | $ 0.8 |  |

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