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Summary of Significant Accounting Policies (Goodwill, Intangible Assets and Concentration of Risk) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Schedule of Accounting Policies [Line Items]      
Goodwill impairment charges $ 9.0 $ 3.9 $ 155.1
Intangible asset impairment charges 7.5 1.7 98.8
Bad debt expense associate with uncollectable accounts 5.1 8.1 11.4
Allowance for Doubtful Accounts [Member]      
Schedule of Accounting Policies [Line Items]      
Bad debt expense associate with uncollectable accounts $ 5.1 $ 8.1 11.4
Minimum [Member]      
Schedule of Accounting Policies [Line Items]      
Payment period on purchases 30 days    
Maximum [Member]      
Schedule of Accounting Policies [Line Items]      
Payment period on purchases 60 days    
PDIC [Member]      
Schedule of Accounting Policies [Line Items]      
Goodwill impairment charges     155.1
Intangible asset impairment charges     $ 93.4
Automotive [Member] | Minimum [Member]      
Schedule of Accounting Policies [Line Items]      
Payment period on purchases 45 days    
Automotive [Member] | Maximum [Member]      
Schedule of Accounting Policies [Line Items]      
Payment period on purchases 360 days    
Copper Rod [Member] | Supplier Concentration Risk [Member] | North America [Member]      
Schedule of Accounting Policies [Line Items]      
Concentration risk, percentage 70.00%    
Copper Rod [Member] | Supplier Concentration Risk [Member] | Latin America [Member]      
Schedule of Accounting Policies [Line Items]      
Concentration risk, percentage 75.00%    
Copper Rod [Member] | Supplier Concentration Risk [Member] | Europe [Member]      
Schedule of Accounting Policies [Line Items]      
Concentration risk, percentage 50.00%    
Aluminum Rod [Member] | Supplier Concentration Risk [Member] | North America [Member]      
Schedule of Accounting Policies [Line Items]      
Concentration risk, percentage 50.00%    
Aluminum Rod [Member] | Supplier Concentration Risk [Member] | Latin America [Member]      
Schedule of Accounting Policies [Line Items]      
Concentration risk, percentage 50.00%    
Aluminum Rod [Member] | Supplier Concentration Risk [Member] | Europe [Member]      
Schedule of Accounting Policies [Line Items]      
Concentration risk, percentage 40.00%