Quarterly report pursuant to Section 13 or 15(d)

DISCONTINUED OPERATIONS Schedule of Disposal Groups, including Discontinued Operations, Income Statement - North American Coal (Details)

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DISCONTINUED OPERATIONS Schedule of Disposal Groups, including Discontinued Operations, Income Statement - North American Coal (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items]    
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX $ 2.5 $ (928.5)
North American Coal [Member]    
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items]    
Disposal Group, Including Discontinued Operation, Revenue 0.0 116.6
Disposal Group, Including Discontinued Operation, Costs of Goods Sold 0.0 (107.3)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss) 0.0 9.3
Disposal Group, Including Discontinued Operation, Operating Expense (1.2) (11.3)
Disposal Group, Including Discontinued Operation, Other Expense 0.0 (0.4)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax (1.2) (2.4)
Impairment of Long-Lived Assets to be Disposed of 0.0 (73.4)
Discontinued Operation, Tax Effect of Discontinued Operation (0.1) 0.1
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX $ (1.3) $ (75.7)