Acquisitions and Divestitures - Schedule of Unaudited Pro Forma Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Business Combinations [Abstract]
Net Sales, Balance as reported	$ 1,211,661	$ 1,162,526	$ 3,510,997	$ 3,197,519
Net Sales, Pro forma adjustments (unaudited)		1,754		231,183
Net Sales, Balance including pro forma adjustments (unaudited)		1,164,280		3,428,702
Income from Operations, Balance as reported	$ 44,404	37,472	$ 45,086	101,077
Income from Operations, Pro forma adjustments (unaudited)		55		4,262
Income from Operations, Balance including pro forma adjustments (unaudited)		$ 37,527		$ 105,339