Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
SEGMENT REPORTING (Schedule Of Segment Reporting Information, By Segment) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Information [Line Items]                      
Revenues from product sales and services $ 600.9 $ 698.4 $ 569.3 $ 461.6 $ 754.0 $ 553.3 $ 496.2 $ 305.5 $ 2,330.2 $ 2,109.0 $ 2,013.3
Revenues from producet sales and services, percent                 100.00% 100.00% 100.00%
SALES MARGIN $ 100.7 $ 160.2 $ 145.1 $ 95.7 $ 181.5 $ 85.4 $ 91.5 30.9 $ 501.7 $ 389.3 $ 236.5
Other operating expense                 (78.1) (148.5) (85.2)
TOTAL OTHER INCOME (EXPENSE)                 (294.2) (33.8) 161.8
Income from continuing operations before income taxes and equity loss from ventures                 129.4 207.0 313.1
Net income (loss)                 363.1 199.3 (748.4)
Interest expense, net                 (132.0) (200.5) (228.5)
Interest Income (Expense), net, including Discontinued Operations                     (231.4)
Income Tax Expense (Benefit)                 (252.4) (12.2) 169.3
Income Tax Expense (Benefit), including Discontinued Operations                     (163.3)
Depreciation, depletion and amortization                 (87.7) (115.4) (134.0)
EBITDA                 330.4 503.0 (219.7)
Gain (loss) on extinguishment/restructuring of debt               $ 174.3 (165.4) 166.3 392.9
LOSS FROM DISCONTINUED OPERATIONS, net of tax                 (18.7) (19.9) (892.1)
Impairment of other long-lived assets                 0.0 0.0 (3.3)
Adjusted EBITDA                 504.9 373.5 292.9
Depreciation, Depletion and Amortization excluding Depreciation, Amortization and Depletion expense for Discontinued Operations                 87.7 115.4 130.8
Capital Additions                 156.0 68.5 72.2
U.S. Iron Ore [Member]                      
Segment Reporting Information [Line Items]                      
Revenues from product sales and services                 $ 1,866.0 $ 1,554.5 $ 1,525.4
Revenues from producet sales and services, percent                 80.00% 74.00% 76.00%
SALES MARGIN                 $ 465.4 $ 275.7 $ 227.1
Depreciation, depletion and amortization                 (66.6) (84.0) (98.9)
EBITDA                 534.9 342.4 317.6
Adjusted EBITDA                 559.4 359.6 352.1
Capital Additions                 136.8 62.2 58.2
Asia Pacific Iron Ore [Member]                      
Segment Reporting Information [Line Items]                      
Revenues from product sales and services                 $ 464.2 $ 554.5 $ 487.9
Revenues from producet sales and services, percent                 20.00% 26.00% 24.00%
SALES MARGIN                 $ 36.3 $ 113.6 $ 9.4
Depreciation, depletion and amortization                 (14.3) (25.1) (25.3)
EBITDA                 40.7 128.3 35.3
Adjusted EBITDA                 50.4 132.9 32.7
Capital Additions                 2.8 0.2 5.4
All Other Segments [Member]                      
Segment Reporting Information [Line Items]                      
Depreciation, depletion and amortization                 (6.8) (6.3) (6.6)
Capital Additions                 16.4 6.1 8.6
Other Segment [Member]                      
Segment Reporting Information [Line Items]                      
EBITDA                 (245.2) 32.3 (572.6)
Adjusted EBITDA                 (104.9) (119.0) (91.9)
EBITDA Calculation [Member]                      
Segment Reporting Information [Line Items]                      
Depreciation, depletion and amortization                 (87.7) (115.4) (134.0)
Adjusted EBITDA Calculation [Member]                      
Segment Reporting Information [Line Items]                      
Impact of Discontinued Operations                     (892.0)
Foreign Exchange Remeasurement                 11.4 (16.8) 16.3
Severance Costs                 0.0 (0.1) (10.2)
Inventory Write-down                 $ (1.8) $ 0.0 $ (16.3)