Severance, Restructuring and Acquisition Integration Activities - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 29, 2015 Program	Mar. 30, 2014
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost	$ 14,483,000	$ 2,295,000
Number of significant programs	2
Additional severance and other restructuring costs and accelerated depreciation expense	12,000,000
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost payable period	60 days
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost	1,400,000
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost	11,800,000	1,900,000
Research and Development [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring cost	$ 1,300,000	$ 400,000