Annual report pursuant to Section 13 and 15(d)

SEGMENT REPORTING (Schedule Of Segment Reporting Information, By Segment) (Details)

v3.3.1.900
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.