Summary of Significant Accounting Policies (Goodwill, Intangible Assets and Concentration of Risk) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 03, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Accounting Policies [Line Items]
Goodwill impairment charge		$ 0.7	$ 93.5	$ 0.0
Intangible asset impairment charges		1.7	78.3	0.0
Allowance for Doubtful Accounts [Member]
Schedule of Accounting Policies [Line Items]
Bad debt expense associate with uncollectable accounts		$ 3.2	4.9	$ 6.3
Copper Rod [Member] | Supplier Concentration Risk [Member] | North America [Member]
Schedule of Accounting Policies [Line Items]
Concentration risk, percentage		75.00%
Copper Rod [Member] | Supplier Concentration Risk [Member] | Latin America [Member]
Schedule of Accounting Policies [Line Items]
Concentration risk, percentage		60.00%
Aluminum Rod [Member] | Supplier Concentration Risk [Member] | North America [Member]
Schedule of Accounting Policies [Line Items]
Concentration risk, percentage		50.00%
Minimum [Member]
Schedule of Accounting Policies [Line Items]
Payment period on purchases		30 days
Minimum [Member] | Automotive [Member]
Schedule of Accounting Policies [Line Items]
Payment period on purchases		45 days
Maximum [Member]
Schedule of Accounting Policies [Line Items]
Payment period on purchases		60 days
Maximum [Member] | Automotive [Member]
Schedule of Accounting Policies [Line Items]
Payment period on purchases		360 days
PDIC [Member]
Schedule of Accounting Policies [Line Items]
Goodwill impairment charge	$ 155.1		93.5
Intangible asset impairment charges	$ 93.4		$ 73.0