Severance, Restructuring and Acquisition Integration Activities - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 31, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 Program	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost	$ 22,000,000	$ 9,200,000	$ 38,200,000	$ 1,400,000	$ 5,400,000	$ 5,900,000	$ 7,700,000	$ 800,000	$ 70,827,000	$ 14,900,000
Number of significant programs									2
Additional severance and other restructuring costs and accelerated depreciation expense	21,000,000								21,000,000
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost									20,700,000	7,100,000	6,500,000
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost									46,500,000	6,500,000	10,000,000
Research and Development [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost									3,600,000	1,300,000	1,400,000
Contract Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost											5,200,000
Broadcast Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost									48,557,000		4,900,000
Industrial IT Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost										1,700,000	500,000
Broadcast Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost										12,100,000
Enterprise Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost									3,318,000		3,200,000
Industrial Connectivity Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost									$ 11,953,000		$ 9,200,000