Acquisitions - Narrative (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended	3 Months Ended	6 Months Ended	0 Months Ended	3 Months Ended		0 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Apr. 30, 2014 Senior Secured Term Loan [Member] 3.8% Notes [Member]	Apr. 30, 2014 Reznor [Member]	Jun. 28, 2014 Reznor [Member]	Jun. 28, 2014 Reznor [Member]	Apr. 01, 2013 2GIG Technologies, Inc. [Member]	Sep. 28, 2013 2GIG Technologies, Inc. [Member]	Jun. 29, 2013 2GIG Technologies, Inc. [Member]	Feb. 22, 2013 Gefen Distribution Verwaltungs GmbH [Member]
Business Acquisition [Line Items]
Business acquisition, cash paid						$ 260,000,000			$ 135,000,000			$ 900,000
Other Payments to Acquire Businesses						1,900,000
Working capital and other post-closing adjustments						300,000
Face amount of secured term loan					350,000,000
Goodwill expected to be tax deductible						91,200,000
Acquisition related costs							3,700,000	5,700,000
Net sales	718,600,000	630,700,000	1,266,400,000	1,149,800,000			23,800,000	23,800,000
Operating earnings (loss)	(32,100,000)	40,400,000	(19,600,000)	45,000,000			(1,400,000)	(1,400,000)
Depreciation and amortization							3,800,000	3,800,000
Inventory amortization							1,500,000	1,500,000
Total consideration									164,200,000			2,900,000
Estimated working capital adjustments									13,900,000
Contingent consideration										1,600,000	12,300,000
Settlement of receivable									15,300,000			1,800,000
Holdback amount												$ 200,000