Annual report pursuant to Section 13 and 15(d)

DISCONTINUED OPERATIONS Schedule of Disposal Groups, including Discontinued Operations, Assets and Liabilities - Canadian Entities (Details)

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DISCONTINUED OPERATIONS Schedule of Disposal Groups, including Discontinued Operations, Assets and Liabilities - Canadian Entities (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items]        
Deconsolidation, Gain (Loss), Amount       $ (528.2)
Canadian Entities [Member]        
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items]        
Deconsolidation, Gain (Loss), Amount   $ (21.3) $ (17.5) $ (710.9)
Bloom Lake Group [Member]        
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items]        
Deconsolidation, Gain (Loss), Amount $ 818.7      
Contingent Liabilities recognized in Consolidated Financials     37.2  
Other Current Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Canadian Entities [Member]        
Schedule of Disposal Groups, Including Discontinued Operations, Assets and Liabilities [Line Items]        
Loans, Associated Interest and Accounts Receivable recognized in Consolidated Financials at Fair Value   $ 51.6 $ 48.6