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Severance, Restructuring and Acquisition Integration Activities - Severance, Restructuring and Integration Costs by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 27, 2015 | Jun. 28, 2015 | Mar. 29, 2015 | Dec. 31, 2014 | Sep. 28, 2014 | Jun. 29, 2014 | Mar. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Costs | $ 13,600 | $ 14,100 | $ 4,900 | $ 14,600 | $ 22,000 | $ 9,200 | $ 38,200 | $ 1,400 | $ 47,170 | $ 70,827 | $ 14,888
Broadcast Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Costs |  |  |  |  |  |  |  |  | 39,078 | 48,557 | 12,128
Enterprise Connectivity Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Costs |  |  |  |  |  |  |  |  | 723 | 3,318 | 400
Industrial Connectivity Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Costs |  |  |  |  |  |  |  |  | 6,228 | 11,953 | 700
Industrial IT Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Costs |  |  |  |  |  |  |  |  | 169 | 6,999 | 1,660
Network Security Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Costs |  |  |  |  |  |  |  |  | 972 |  |
Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 19,101 | 37,254 | 5,430
Employee Severance [Member] | Broadcast Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 16,694 | 20,025 | 4,112
Employee Severance [Member] | Enterprise Connectivity Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | (186) | 2,183 |
Employee Severance [Member] | Industrial Connectivity Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 3,309 | 9,732 |
Employee Severance [Member] | Industrial IT Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | (728) | 5,314 | 1,318
Employee Severance [Member] | Network Security Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 12 |  |
Other Than Severance Costs Restructuring and Integration Costs Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 28,069 | 33,573 | 9,458
Other Than Severance Costs Restructuring and Integration Costs Member] | Broadcast Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 22,384 | 28,532 | 8,016
Other Than Severance Costs Restructuring and Integration Costs Member] | Enterprise Connectivity Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 909 | 1,135 | 400
Other Than Severance Costs Restructuring and Integration Costs Member] | Industrial Connectivity Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 2,919 | 2,221 | 700
Other Than Severance Costs Restructuring and Integration Costs Member] | Industrial IT Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 897 | $ 1,685 | $ 342
Other Than Severance Costs Restructuring and Integration Costs Member] | Network Security Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | $ 960 |  |

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