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SEGMENT REPORTING (Schedule Of Segment Reporting Information, By Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Revenues from producet sales and services, percent | 100.00% | 100.00% | 100.00% | 100.00%
Revenues from product sales and services | $ 569.3 | $ 496.2 | $ 1,030.9 | $ 801.7
Sales margin | 145.1 | 91.5 | 240.8 | 122.4
Other operating expense | (30.5) | (16.8) | (44.3) | (48.0)
Other income (expense) | (35.5) | (46.9) | (149.5) | 75.2
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest | 79.1 | 27.8 | 47.0 | 149.6
Net Income | 30.1 | 29.5 | 0.3 | 146.3
Interest expense, net | (31.4) | (50.7) | (74.2) | (107.5)
Income tax benefit (expense) | (2.6) | 2.1 | (0.8) | (5.4)
Depreciation, depletion and amortization | 21.6 | 26.9 | 44.8 | 62.1
EBITDA | 85.7 | 105.0 | 120.1 | 321.3
Gain (loss) on extinguishment/restructuring of debt | (4.9) | 3.6 | (76.8) | 182.4
Adjusted EBITDA | 137.0 | 101.6 | 229.2 | 137.8
Property, Plant and Equipment, Additions | $ 25.2 | $ 11.3 | 52.5 | 18.1
Payments To Acquire Property Plant And Equipment Net |  |  | 49.4 | 20.2
Capital Expenditures Incurred but Not yet Paid |  |  | $ 3.1 | $ (2.1)
U.S. Iron Ore [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues from producet sales and services, percent | 83.00% | 73.00% | 73.00% | 68.00%
Revenues from product sales and services | $ 471.3 | $ 361.7 | $ 757.5 | $ 547.2
Sales margin | 144.2 | 70.0 | 192.6 | 83.2
Depreciation, depletion and amortization | 16.7 | 19.4 | 33.1 | 46.3
EBITDA | 155.0 | 94.1 | 212.9 | 135.5
Adjusted EBITDA | 161.5 | 97.2 | 225.6 | 143.3
Property, Plant and Equipment, Additions | $ 24.6 | $ 9.2 | $ 51.7 | $ 13.7
Asia Pacific Iron Ore [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues from producet sales and services, percent | 17.00% | 27.00% | 27.00% | 32.00%
Revenues from product sales and services | $ 98.0 | $ 134.5 | $ 273.4 | $ 254.5
Sales margin | 0.9 | 21.5 | 48.2 | 39.2
Depreciation, depletion and amortization | 3.3 | 6.1 | 8.0 | 12.9
EBITDA | 1.2 | 26.1 | 52.6 | 48.4
Adjusted EBITDA | 3.0 | 26.5 | 56.8 | 49.5
Property, Plant and Equipment, Additions | 0.6 | 0.0 | 0.8 | 0.0
All Other Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion and amortization | 1.6 | 1.4 | 3.7 | 2.9
EBITDA | (70.5) | (15.2) | (145.4) | 137.4
Adjusted EBITDA | (27.5) | (22.1) | (53.2) | (55.0)
Property, Plant and Equipment, Additions | 0.0 | 2.1 | 0.0 | 4.4
EBITDA Calculation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion and amortization | 21.6 | 26.9 | 44.8 | 62.1
Adjusted EBITDA Calculation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Impact of discontinued operations | (46.4) | (0.4) | (45.9) | 2.1
Severance and contractor termination costs | 0.0 | 0.0 | 0.0 | (0.1)
Foreign exchange remeasurement | $ 0.0 | $ 0.2 | $ 13.6 | $ (0.9)

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