Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

The supplemental quarterly financial data are as follows:

	Quarters Ended
	April 1, 2017		July 1, 2017	September 30, 2017	December 31, 2017
Net sales	$	2,220,645	2,453,038	2,448,510	2,369,097
Gross profit	680,353		779,136	783,301	753,624
Net earnings	200,554		260,681	270,025	240,378
Basic earnings per share	2.70		3.51	3.63	3.23
Diluted earnings per share	2.68		3.48	3.61	3.21

	Quarters Ended
	April 2, 2016		July 2, 2016	October 1, 2016	December 31, 2016
Net sales	$	2,172,046	2,310,336	2,294,139	2,182,566
Gross profit	639,679		755,588	726,559	690,999
Net earnings	171,548		255,188	269,878	233,748
Basic earnings per share	2.32		3.44	3.64	3.15
Diluted earnings per share	2.30		3.42	3.62	3.13