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INCOME TAXES Income Taxes (Schedule of Valuation Allowance) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Valuation Allowance [Line Items] |  |  |  |
Deferred Tax Assets, Valuation Allowance | $ 441.3 | $ 1,287.3 | $ 1,983.1 | $ 3,095.1
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | (695.8) |  |
Included in income tax expense (benefit) [Member] |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | (846.0) | (691.3) | (1,120.0) |
Change in deferred assets in other comprehensive income [Member] |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 0.0 | (4.5) | (9.8) |
Acquisition of noncontrolling interest [Member] |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 0.0 | $ 0.0 | $ 17.8 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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