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Reporting Segment Information - Schedule of Segment Reporting Information, by Operating Segment (Detail) - 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	Oct. 07, 2017	Apr. 20, 2019	Apr. 21, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Segment Reporting Information [Line Items]
Net sales	$ 1,997,953	$ 1,999,808	$ 1,995,929	$ 1,896,796	$ 1,886,730	$ 1,895,953		$ 2,542,375	$ 2,385,073	$ 8,536,065	$ 8,064,552	$ 7,963,799
Merger/acquisition and integration	73		582	1,406	521	804		782	2,206	1,437	4,937	8,101
Goodwill impairment												189,027
Restructuring, asset impairment and other charges (gains)	2,835	$ 1,296	$ 14,581	32,277	$ 232	$ (1,164)		$ (5,662)	$ 6,202	13,050	37,546	39,432
Depreciation and amortization										88,401	82,853	83,240
Operating earnings (loss)										56,942	70,512	(106,675)
Capital expenditures										74,815	71,495	70,906
Total Assets	2,275,609			1,971,912						2,275,609	1,971,912
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total Assets	3,090			3,151						3,090	3,151
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales										8,536,065	8,064,552	7,963,799
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales										(976,372)	(842,934)	(885,872)
Food Distribution [Member]
Segment Reporting Information [Line Items]
Net sales										3,982,609	3,991,450	3,827,909
Merger/acquisition and integration										(122)	3,581	6,244
Restructuring, asset impairment and other charges (gains)										14,844	33,056	1,317
Depreciation and amortization										33,396	32,073	30,255
Operating earnings (loss)										47,416	48,752	83,115
Capital expenditures										28,385	33,271	25,990
Total Assets	1,087,307			1,074,125						1,087,307	1,074,125
Food Distribution [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales										3,982,609	3,991,450	3,827,909
Food Distribution [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales										(976,372)	(842,934)	(885,872)
Military [Member]
Segment Reporting Information [Line Items]
Net sales										2,172,107	2,166,843	2,144,022
Merger/acquisition and integration											4	1,522
Restructuring, asset impairment and other charges (gains)											(801)	500
Depreciation and amortization										11,834	11,968	11,626
Operating earnings (loss)										(9,316)	5,647	6,969
Capital expenditures										6,295	3,530	6,482
Total Assets	390,799			405,587						390,799	405,587
Military [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales										2,172,107	2,166,843	2,144,022
Retail [Member]
Segment Reporting Information [Line Items]
Net sales										2,381,349	1,906,259	1,991,868
Merger/acquisition and integration										1,559	1,352	335
Goodwill impairment							$ 189,000					189,027
Restructuring, asset impairment and other charges (gains)										(1,794)	5,291	37,615
Depreciation and amortization										43,171	38,812	41,359
Operating earnings (loss)										18,842	16,113	(196,759)
Capital expenditures										40,135	34,694	38,434
Total Assets	$ 794,413			$ 489,049						794,413	489,049
Retail [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales										$ 2,381,349	$ 1,906,259	$ 1,991,868