Severance, Restructuring and Acquisition Integration Activities - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		21 Months Ended	24 Months Ended	27 Months Ended
	Oct. 01, 2017	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 01, 2017	Oct. 01, 2017
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		$ 16,679	$ 12,795	$ 32,839	$ 27,072
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost payable period				60 days
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		12,400	2,900	$ 26,500	6,800
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		4,200	9,900	6,200	19,600
Research and Development
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		100	0	100	700
Industrial Restructuring Program
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs			2,600	0	8,400		$ 13,000
Expected savings from the restructuring program	$ 18,000
Industrial Manufacturing Footprint Program
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		11,400	10,000	25,300	12,500	$ 43,100
Expected savings from the restructuring program	13,000
Additional severance and other restructuring costs	7,000	$ 7,000		7,000		$ 7,000	$ 7,000	$ 7,000
Grass Valley Restructuring Program
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs			$ 100	$ 0	$ 5,100			$ 34,100
Expected savings from the restructuring program	$ 30,000