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DISCONTINUED OPERATIONS Schedule of Disposal Groups, including Discontinued Operations, Income Statement - North American Coal (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items] |  |  |
Discontinued Operation, Tax Effect of Discontinued Operation | $ (6.0) | $ (1,216.0) | $ (184.5)
LOSS FROM DISCONTINUED OPERATIONS, net of tax | (892.1) | (8,368.0) | (517.1)
North American Coal [Member] |  |  |
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items] |  |  |
Disposal Group, Including Discontinued Operation, Revenue | 392.9 | 687.1 | 821.9
Disposal Group, Including Discontinued Operation, Costs of Goods Sold | (449.2) | (822.9) | (836.4)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss) | (56.3) | (135.8) | (14.5)
Disposal Group, Including Discontinued Operation, Operating Expense | (30.4) | (20.8) | (13.8)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax | 9.3 | (419.6) | 0.0
Disposal Group, Including Discontinued Operation, Other Expense | (1.8) | (3.0) | (2.4)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax | (79.2) | (579.2) | (3.1)
Impairment of Long-Lived Assets to be Disposed of | (73.4) | (857.5) | 0.0
Discontinued Operation, Tax Effect of Discontinued Operation | 0.2 | 302.2 | (6.2)
LOSS FROM DISCONTINUED OPERATIONS, net of tax | $ (152.4) | $ (1,134.5) | $ (9.3)

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- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721525-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e957-107759 + Details
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