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SEGMENT REPORTING (Schedule Of Segment Reporting Information, By Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  |  |  |  |  |  |  |  |  | $ 392.9 | $ 16.2 | $ 0.0
Net income (loss) |  |  |  |  |  |  |  |  |  | (748.4) | (8,311.6) | 361.8
Interest Income (Expense), net, including Discontinued Operations |  |  |  |  |  |  |  |  |  | (231.4) | (185.2) | (179.1)
Revenues from product sales and services |  | $ 476.0 | $ 593.2 | $ 498.1 | $ 446.0 | $ 1,030.3 | $ 979.7 | $ 747.7 | $ 615.5 | $ 2,013.3 | $ 3,373.2 | $ 3,890.8
Revenues from producet sales and services, percent |  |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
SALES MARGIN |  | $ 43.3 | $ 55.1 | $ 57.3 | $ 80.8 | 256.0 | $ 256.2 | $ 183.5 | $ 190.0 | $ 236.5 | $ 885.7 | $ 1,484.4
Other operating expense |  |  |  |  |  |  |  |  |  | (85.2) | (755.6) | (104.1)
Other expense |  |  |  |  |  |  |  |  |  | 161.8 | (149.8) | (189.4)
Income (Loss) from Continuing Operations Before Income Taxes and Equity Loss from Ventures |  |  |  |  |  |  |  |  |  | 313.1 | (19.7) | 1,190.9
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  | (134.0) | (504.0) | (593.3)
Depreciation, Depletion and Amortization excluding Depreciation, Amortization and Depletion expense for Discontinued Operations |  |  |  |  |  |  |  |  |  | 130.8 | 261.0 | 284.8
Capital Additions |  |  |  |  |  |  |  |  |  | 72.2 | 65.5 | 70.8
Income Tax Expense (Benefit), including Discontinued Operations |  |  |  |  |  |  |  |  |  | (163.3) | 1,302.0 | (55.1)
EBITDA |  |  |  |  |  |  |  |  |  | (219.7) | (8,924.4) | 1,189.3
Loss (gain) on sale of North American Coal mines |  |  |  |  |  | $ 419.6 |  |  |  |  | 155.0 |
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | 292.9 | 1,048.3 | 1,565.4
U.S. Iron Ore [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues from product sales and services |  |  |  |  |  |  |  |  |  | $ 1,525.4 | $ 2,506.5 | $ 2,667.9
Revenues from producet sales and services, percent |  |  |  |  |  |  |  |  |  | 76.00% | 74.00% | 69.00%
SALES MARGIN |  |  |  |  |  |  |  |  |  | $ 227.1 | $ 710.4 | $ 901.9
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  | (98.9) | (107.4) | (120.3)
Capital Additions | [1] |  |  |  |  |  |  |  |  | 58.2 | 48.4 | 53.3
EBITDA |  |  |  |  |  |  |  |  |  | 317.6 | 805.6 | 1,000.1
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | 352.1 | 833.5 | 1,031.8
Asia Pacific Iron Ore [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues from product sales and services |  |  |  |  |  |  |  |  |  | $ 487.9 | $ 866.7 | $ 1,224.3
Revenues from producet sales and services, percent |  |  |  |  |  |  |  |  |  | 24.00% | 26.00% | 31.00%
SALES MARGIN |  |  |  |  |  |  |  |  |  | $ 9.4 | $ 121.7 | $ 367.1
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  | (25.3) | (145.9) | (153.7)
Capital Additions | [1] |  |  |  |  |  |  |  |  | 5.4 | 10.8 | 13.0
EBITDA |  |  |  |  |  |  |  |  |  | 35.3 | (352.9) | 543.0
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | 32.7 | 252.9 | 513.1
Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Eliminations with Discontinued Operations |  |  |  |  |  |  |  |  |  | 0.0 | 53.6 | 217.3
All Other Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues from product sales and services |  |  |  |  |  |  |  |  |  | $ 0.0 | $ 0.0 | $ (1.4)
Revenues from producet sales and services, percent |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 0.00%
SALES MARGIN |  |  |  |  |  |  |  |  |  | $ 0.0 | $ 0.0 | $ (1.9)
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  | (6.6) | (7.7) | (10.8)
Capital Additions | [1] |  |  |  |  |  |  |  |  | 8.6 | 6.3 | 4.5
Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
EBITDA |  |  |  |  |  |  |  |  |  | (572.6) | (9,377.1) | (353.8)
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | (91.9) | (38.1) | 20.5
EBITDA Calculation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  | (134.0) | (504.0) | (593.3)
Amapa [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Other than Temporary Impairment |  |  |  |  |  |  |  |  |  |  |  | 67.6
Adjusted EBITDA Calculation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impact of Discontinued Operations |  |  |  |  |  |  |  |  |  | (892.0) | (9,332.5) | (398.4)
Severance Costs |  |  |  |  |  |  |  |  |  | (10.2) | (23.3) | (16.6)
Foreign Exchange Remeasurement |  |  |  |  |  |  |  |  |  | 16.3 | 29.0 | 53.2
Proxy contest and change in control costs in SG&A |  |  |  |  |  |  |  |  |  | 0.0 | (26.6) | 0.0
Inventory Write-down |  |  |  |  |  |  |  |  |  | $ (16.3) | $ 0.0 | $ 0.0
[1] | 1) Includes capital lease additions and non-cash accruals. Refer to NOTE 17 - CASH FLOW INFORMATION.

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