Severance, Restructuring and Acquisition Integration Activities - Severance, Restructuring and Integration Costs by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Restructuring Cost and Reserve [Line Items]
Total Costs	$ 9,158	$ 3,800	$ 48,809	$ 9,500
Broadcast Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Total Costs	5,794		34,761
Enterprise Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Total Costs	226		2,047
Industrial Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Total Costs	2,106		10,250
Industrial IT Segment [Member]
Restructuring Cost and Reserve [Line Items]
Total Costs	1,032		1,751
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance	1,812		30,203
Employee Severance [Member] | Broadcast Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance	54		18,156
Employee Severance [Member] | Enterprise Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance	(347)		1,245
Employee Severance [Member] | Industrial Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance	1,282		9,393
Employee Severance [Member] | Industrial IT Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance	823		1,409
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	7,346		18,606
Other Restructuring [Member] | Broadcast Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	5,740		16,605
Other Restructuring [Member] | Enterprise Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	573		802
Other Restructuring [Member] | Industrial Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	824		857
Other Restructuring [Member] | Industrial IT Segment [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 209		$ 342