Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Dec. 28, 2019	Oct. 05, 2019	Jul. 13, 2019	Dec. 29, 2018	Oct. 06, 2018	Jul. 14, 2018	Apr. 20, 2019	Apr. 21, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Quarterly Financial Data (unaudited) [Abstract]
Net sales	$ 2,112,614	$ 2,312,106	$ 2,332,246	$ 2,105,072	$ 2,274,982	$ 2,326,652	$ 2,952,036	$ 2,873,848	$ 9,709,003	$ 9,580,554	$ 9,373,784
Gross Profit	928,769	1,011,926	1,009,438	928,643	1,006,927	1,011,559	1,304,612	1,272,284	4,254,746	4,219,413	4,085,049
Net Income (Loss) Attributable to Parent	$ 95,907	$ 123,669	$ 124,820	$ 53,441	$ 115,843	$ 117,836	$ 142,500	$ 136,727	$ 486,896	$ 423,847	$ 475,505
Basic earnings per common share	$ 1.39	$ 1.76	$ 1.74	$ 0.74	$ 1.57	$ 1.59	$ 1.99	$ 1.85	$ 6.87	$ 5.75	$ 6.44
Diluted earnings per common share	$ 1.38	$ 1.75	$ 1.73	$ 0.74	$ 1.56	$ 1.59	$ 1.98	$ 1.84	$ 6.84	$ 5.73	$ 6.42