Condensed Consolidating Financial Statements Condensed Consolidating Statements of Operations (Details) - USD ($) $ 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
Condensed Income Statements, Captions [Line Items]
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
Cost of sales, including purchasing and warehousing costs									5,454,257	5,361,141	5,288,735
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
Selling, general and administrative expenses									3,577,566	3,615,138	3,514,837
Operating (loss) income									677,180	604,275	570,212
Other, net:
Interest expense									(39,898)	(56,588)	(58,801)
Other income (expense), net									464	7,577	8,848
Total other, net									(39,434)	(49,011)	(49,953)
Income before provision for income taxes									637,746	555,264	520,259
Provision for income taxes									150,850	131,417	44,754
(Loss) income before equity in earnings of subsidiaries									486,896	423,847	475,505
Equity in earnings of subsidiary									0	0	0
Net income	$ 95,907	$ 123,669	$ 124,820	$ 53,441	$ 115,843	$ 117,836	$ 142,500	$ 136,727	486,896	423,847	475,505
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net sales									0	0	0
Cost of sales, including purchasing and warehousing costs									0	0	0
Gross Profit									0	0	0
Selling, general and administrative expenses									28,216	20,235	30,478
Operating (loss) income									(28,216)	(20,235)	(30,478)
Other, net:
Interest expense									(37,366)	(52,253)	(52,305)
Other income (expense), net									66,842	73,174	83,840
Total other, net									29,476	20,921	31,535
Income before provision for income taxes									1,260	686	1,057
Provision for income taxes									2,429	2,519	641
(Loss) income before equity in earnings of subsidiaries									(1,169)	(1,833)	416
Equity in earnings of subsidiary									488,065	425,680	475,089
Net income									486,896	423,847	475,505
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales									9,342,240	9,225,772	9,034,790
Cost of sales, including purchasing and warehousing costs									5,252,418	5,169,076	5,107,063
Gross Profit									4,089,822	4,056,696	3,927,727
Selling, general and administrative expenses									3,503,529	3,547,645	3,453,406
Operating (loss) income									586,293	509,051	474,321
Other, net:
Interest expense									(2,310)	(4,336)	(6,496)
Other income (expense), net									(16,274)	(6,961)	(17,729)
Total other, net									(18,584)	(11,297)	(24,225)
Income before provision for income taxes									567,709	497,754	450,096
Provision for income taxes									131,885	117,015	32,623
(Loss) income before equity in earnings of subsidiaries									435,824	380,739	417,473
Equity in earnings of subsidiary									52,241	44,941	57,616
Net income									488,065	425,680	475,089
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales									568,522	519,883	550,450
Cost of sales, including purchasing and warehousing costs									336,110	357,166	393,128
Gross Profit									232,412	162,717	157,322
Selling, general and administrative expenses									160,717	98,412	82,155
Operating (loss) income									71,695	64,305	75,167
Other, net:
Interest expense									(222)	1	0
Other income (expense), net									(2,695)	(7,482)	(6,061)
Total other, net									(2,917)	(7,481)	(6,061)
Income before provision for income taxes									68,778	56,824	69,106
Provision for income taxes									16,537	11,883	11,490
(Loss) income before equity in earnings of subsidiaries									52,241	44,941	57,616
Equity in earnings of subsidiary									0	0	0
Net income									52,241	44,941	57,616
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net sales									(201,759)	(165,101)	(211,456)
Cost of sales, including purchasing and warehousing costs									(134,271)	(165,101)	(211,456)
Gross Profit									(67,488)	0	0
Selling, general and administrative expenses									(114,896)	(51,154)	(51,202)
Operating (loss) income									47,408	51,154	51,202
Other, net:
Interest expense									0	0	0
Other income (expense), net									(47,409)	(51,154)	(51,202)
Total other, net									(47,409)	(51,154)	(51,202)
Income before provision for income taxes									(1)	0	0
Provision for income taxes									(1)	0	0
(Loss) income before equity in earnings of subsidiaries									0	0	0
Equity in earnings of subsidiary									(540,306)	(470,621)	(532,705)
Net income									$ (540,306)	$ (470,621)	$ (532,705)