Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,997,997	$ 2,150,656	$ 2,041,733	$ 1,881,177	$ 1,951,446	$ 1,990,658	$ 2,048,247	$ 1,813,095	$ 8,071,563	$ 7,803,446	$ 7,348,754
Gross profit	622,210	661,404	615,129	511,943	541,603	556,422	574,812	481,355	2,410,686	2,154,192	1,920,809
Net earnings	$ 191,559	$ 214,905	$ 186,492	$ 22,346	$ 146,868	$ 151,266	$ 152,750	$ 81,081	$ 615,302	$ 531,965	$ 348,786
Basic earnings per share (usd per share)	$ 2.59	$ 2.91	$ 2.54	$ 0.31	$ 2.01	$ 2.08	$ 2.10	$ 1.11		$ 7.30	$ 4.86
Diluted earnings per share (usd per share)	$ 2.57	$ 2.89	$ 2.53	$ 0.30	$ 2.00	$ 2.06	$ 2.08	$ 1.11		$ 7.25	$ 4.82