Fair Value Disclosure (Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Apr. 03, 2015		Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities held in rabbi trust	$ 31.2		$ 31.9
Other Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost incurred to date	22.3		23.5
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	3.9		5.4
Equity securities	20.4	[1]	22.1	[1]
Total Assets	24.3		27.5
Derivative liabilities	9.9		8.1
Total liabilities	9.9		8.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0		0
Equity securities	20.4	[1]	22.1	[1]
Total Assets	20.4		22.1
Derivative liabilities	0		0
Total liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	3.9		5.4
Equity securities	0	[1]	0	[1]
Total Assets	3.9		5.4
Derivative liabilities	9.9		8.1
Total liabilities	9.9		8.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0		0
Equity securities	0	[1]	0	[1]
Total Assets	0		0
Derivative liabilities	0		0
Total liabilities	$ 0		$ 0

[1] Balance represents the market value of the assets, exclusive of the market value of restricted stock and restricted stock units held ("Deferred Stock") and the General Cable Stock Fund by participants’ elections, held in the Rabbi Trust in connection with the Company's deferred compensation plan at April 3, 2015 and December 31, 2014 classified as “other non-current assets” in the Condensed Consolidated Balance Sheets. The market value of mutual fund investments and General Cable Stock Fund in the Rabbi Trust was $31.2 million and $31.9 million as of April 3, 2015 and December 31, 2014, respectively. Amounts payable to the plan participants at April 3, 2015 and December 31, 2014, excluding the Deferred Stock were $22.3 million and $23.5 million, respectively, and are classified as “other liabilities” in the Condensed Consolidated Balance Sheets.