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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. 29, 2018	Oct. 06, 2018	Jul. 14, 2018	Dec. 30, 2017	Oct. 07, 2017	Jul. 15, 2017	Apr. 21, 2018	Apr. 22, 2017	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 1,896,796	$ 1,886,730	$ 1,895,953	$ 1,885,500	$ 1,868,398	$ 1,856,199	$ 2,385,073	$ 2,353,702	$ 8,064,552	$ 7,963,799	$ 7,561,084
Merger/acquisition and integration	1,406	521	804	1,070	2,392	622	2,206	4,017	4,937	8,101	6,959
Goodwill impairment					189,027				0	189,027
Restructuring charges (gains), asset impairment and other charges	32,277	$ 232	$ (1,164)	2,799	35,626	$ (14)	$ 6,202	$ 1,021	37,546	39,432	32,116
Depreciation and amortization									82,853	83,240	77,246
Operating earnings (loss)									70,512	(106,675)	109,184
Capital expenditures									71,495	70,906	73,429
Total Assets	1,971,912			2,055,797					1,971,912	2,055,797
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total Assets	3,151			3,446					3,151	3,446
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									8,064,552	7,963,799	7,561,084
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales									(842,934)	(885,872)	(918,095)
Food Distribution [Member]
Segment Reporting Information [Line Items]
Net sales									3,991,450	3,827,909	3,281,025
Merger/acquisition and integration									3,581	6,244	3,703
Restructuring charges (gains), asset impairment and other charges									33,056	1,317	5,068
Depreciation and amortization									32,073	30,255	21,397
Operating earnings (loss)									48,752	83,115	85,296
Capital expenditures									33,271	25,990	19,075
Total Assets	1,074,125			1,085,621					1,074,125	1,085,621
Food Distribution [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									3,991,450	3,827,909	3,281,025
Food Distribution [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales									(842,934)	(885,872)	(918,095)
Military [Member]
Segment Reporting Information [Line Items]
Net sales									2,166,843	2,144,022	2,197,014
Merger/acquisition and integration									4	1,522	1
Restructuring charges (gains), asset impairment and other charges									(801)	500	(473)
Depreciation and amortization									11,968	11,626	11,484
Operating earnings (loss)									5,647	6,969	12,216
Capital expenditures									3,530	6,482	6,447
Total Assets	405,587			432,818					405,587	432,818
Military [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									2,166,843	2,144,022	2,197,014
Retail [Member]
Segment Reporting Information [Line Items]
Net sales									1,906,259	1,991,868	2,083,045
Merger/acquisition and integration									1,352	335	3,255
Goodwill impairment					$ 189,000				0	189,027
Restructuring charges (gains), asset impairment and other charges									5,291	37,615	27,521
Depreciation and amortization									38,812	41,359	44,365
Operating earnings (loss)									16,113	(196,759)	11,672
Capital expenditures									34,694	38,434	47,907
Total Assets	$ 489,049			$ 533,912					489,049	533,912
Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									$ 1,906,259	$ 1,991,868	$ 2,083,045

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