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Revenue - Summary of Information about Disaggregated Revenue of Reportable Segments (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	Apr. 20, 2019	Apr. 21, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Disaggregation Of Revenue [Line Items]
Total revenue	$ 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
Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,165,738	3,049,544	3,054,347
Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,982,145	2,768,826	2,768,280
Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,152,056	2,021,909	1,929,306
Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									87,347	85,656	85,193
Fuel [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									148,779	138,617	126,673
Individuals Customer [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,380,524	1,905,328	1,990,792
Manufacturers, brokers and distributors [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,245,791	2,286,893	2,329,605
Retailers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,838,847	3,804,151	3,576,058
Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									70,903	68,180	67,344
Food Distribution [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,982,609	3,991,450	3,827,909
Food Distribution [Member] | Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,209,436	1,249,374	1,206,832
Food Distribution [Member] | Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,445,902	1,478,142	1,456,632
Food Distribution [Member] | Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,247,964	1,185,390	1,085,282
Food Distribution [Member] | Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									79,307	78,544	79,163
Food Distribution [Member] | Manufacturers, brokers and distributors [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									179,872	197,128	210,004
Food Distribution [Member] | Retailers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,739,316	3,733,254	3,556,591
Food Distribution [Member] | Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									63,421	61,068	61,314
Military [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,172,107	2,166,843	2,144,022
Military [Member] | Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,027,661	1,052,462	1,054,590
Military [Member] | Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									636,147	602,023	577,084
Military [Member] | Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									501,642	506,177	507,394
Military [Member] | Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									6,657	6,181	4,954
Military [Member] | Manufacturers, brokers and distributors [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,065,919	2,089,765	2,119,601
Military [Member] | Retailers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									99,531	70,897	19,467
Military [Member] | Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									6,657	6,181	4,954
Retail [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,381,349	1,906,259	1,991,868
Retail [Member] | Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									928,641	747,708	792,925
Retail [Member] | Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									900,096	688,661	734,564
Retail [Member] | Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									402,450	330,342	336,630
Retail [Member] | Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,383	931	1,076
Retail [Member] | Fuel [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									148,779	138,617	126,673
Retail [Member] | Individuals Customer [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,380,524	1,905,328	1,990,792
Retail [Member] | Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									$ 825	$ 931	$ 1,076

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 5
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