XML 25 R42.htm IDEA: XBRL DOCUMENT v3.3.0.814
Acquisition of Dearborn (Details2) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 4 Months Ended 9 Months Ended
Jul. 31, 2015
Jun. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Sep. 30, 2015
Sep. 30, 2014
Mar. 31, 2015
Business Acquisition [Line Items]              
Investment in acquired business, net of cash acquired         $ 0.0 $ 677.2  
Proceeds from sale of equity investee         $ 25.0 0.0  
Double Eagle Steel Coating Company [Member]              
Business Acquisition [Line Items]              
Equity Method Investment, Ownership Percentage             50.00%
Proceeds from sale of equity investee   $ 25.0          
Severstal Dearborn [Member]              
Business Acquisition [Line Items]              
Investment in acquired business, net of cash acquired       $ 690.3      
Business Acquisition, Pro Forma Revenue           5,945.0  
Business Acquisition, Pro Forma Operating Profit (Loss)           (890.3)  
Business Combination Pro Forma Asset Impairment Charge           1,005.1  
Business Combination, Additional Disclosures, Income Tax Charge     $ 2.1     2.1  
Selling, General and Administrative Expenses [Member] | Severstal Dearborn [Member]              
Business Acquisition [Line Items]              
Business Combination, Acquisition Related Costs     6.3     7.3  
Business Combination, Integration Related Costs     2.6     2.6  
Other Nonoperating Income (Expense) [Member] | Severstal Dearborn [Member]              
Business Acquisition [Line Items]              
Business Combination, Additional Disclosures, Unused Bridge Commitment Expensed     $ 12.6     $ 12.6  
DTE Electric Company [Member]              
Business Acquisition [Line Items]              
Loss Contingency, Damages Awarded, Value $ 25.0