Annual report pursuant to Section 13 and 15(d)

DISCONTINUED OPERATIONS PreTax Exit Costs (Details)

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DISCONTINUED OPERATIONS PreTax Exit Costs (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
PreTax Exit Costs [Line Items]        
Deconsolidation, Gain (Loss), Amount       $ (528.2)
Canadian Entities [Member]        
PreTax Exit Costs [Line Items]        
Investment Impairment of Deconsolidation   $ 3.0 $ (17.5) (507.8)
Deconsolidation, Gain (Loss), Amount   (21.3) (17.5) (710.9)
Bloom Lake Group [Member]        
PreTax Exit Costs [Line Items]        
Contingent Liabilities of Deconsolidated Entities   $ (24.3) $ 0.0 $ (203.1)
Deconsolidation, Gain (Loss), Amount $ 818.7