Quarterly report pursuant to Section 13 or 15(d)

SEGMENT REPORTING (Schedule of Segment Reporting Information) (Details)

v3.10.0.1
SEGMENT REPORTING (Schedule of Segment Reporting Information) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2018
Sep. 30, 2017
Segment Reporting Information [Line Items]                
NET INCOME $ 437.8 $ 165.1 $ (84.3) $ 52.9 $ 30.1 $ (29.8) $ 518.6 $ 53.2
Revenues 741.8     596.7     1,636.1 1,354.2
SALES MARGIN 261.6     157.8     607.6 351.5
Other operating expense (36.1)     (29.1)     (97.6) (74.2)
TOTAL OTHER INCOME (EXPENSE) (25.2)     (113.6)     (79.8) (256.9)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 200.3     15.1     430.2 20.4
Interest expense, net (29.5)     (27.6)     (93.1) (99.1)
Income Tax Expense (Benefit) 0.5     (7.2)     14.4 (7.2)
Depreciation, depletion and amortization             (68.6) (66.3)
EBITDA 487.2     95.7     697.1 215.8
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX 238.0     30.6     102.8 25.6
Foreign currency transaction gain (loss), before tax (0.2)     (1.3)     (0.7) 14.0
Gain (loss) on extinguishment of debt 0.0     (88.6)     0.2 (165.4)
Impairment Charges (1.1)     0.0     (1.1) 0.0
Adjusted EBITDA 250.3     150.8     578.3 325.9
Property, Plant and Equipment, Additions 92.6     26.3     241.9 78.0
Payments To Acquire Property Plant And Equipment Net             (194.7) (77.4)
Payments to Acquire Property, Plant, and Equipment             83.3 16.2
Capital Expenditures Incurred but Not yet Paid             42.2 0.6
Government grant rebate             2.5 0.0
Capital Lease Obligations Incurred             7.6 0.0
U.S. Iron Ore [Member]                
Segment Reporting Information [Line Items]                
Revenues $ 741.8     $ 596.7     $ 1,636.1 $ 1,354.2
Percentage Of Segment Revenue 100.00%     100.00%     100.00% 100.00%
SALES MARGIN $ 261.6     $ 157.8     $ 607.6 $ 351.5
Depreciation, depletion and amortization (17.8)     (16.5)     (49.2) (49.6)
EBITDA 273.1     168.9     641.6 381.8
Adjusted EBITDA 279.5     174.2     657.9 399.8
Property, Plant and Equipment, Additions 51.8     19.2     97.2 70.9
All Segments                
Segment Reporting Information [Line Items]                
Depreciation, depletion and amortization (19.2)     (18.2)     (53.4) (55.0)
EBITDA 214.1     (73.2)     55.5 (166.0)
Adjusted EBITDA (29.2)     (23.4)     (79.6) (73.9)
Corporate and Other [Member]                
Segment Reporting Information [Line Items]                
Depreciation, depletion and amortization (1.4)     (1.7)     (4.2) (5.4)
Property, Plant and Equipment, Additions 40.8     7.1     144.7 7.1
EBITDA Calculation [Member]                
Segment Reporting Information [Line Items]                
Interest expense, net (29.7)     (28.9)     (95.5) (103.1)
Income Tax Expense (Benefit) (0.5)     7.6     (14.4) 6.8
Depreciation, depletion and amortization (19.2)     (21.5)     (68.6) (66.3)
Adjusted EBITDA Calculation [Member]                
Segment Reporting Information [Line Items]                
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX $ 238.2     $ 34.8     $ 120.4 $ 41.3