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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. 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
Disaggregation Of Revenue [Line Items]
Total revenue	$ 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
Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,049,544	3,054,347	3,182,467
Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,768,826	2,768,280	2,442,808
Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,021,909	1,929,306	1,777,797
Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									85,656	85,193	47,393
Fuel [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									138,617	126,673	110,619
Individuals Customer [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,905,328	1,990,792	2,081,877
Manufacturers, brokers and distributors [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,286,893	2,329,605	2,191,356
Retailers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,804,151	3,576,058	3,246,872
Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									68,180	67,344	40,979
Food Distribution [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,991,450	3,827,909	3,281,025
Food Distribution [Member] | Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,249,374	1,206,832	1,235,314
Food Distribution [Member] | Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,478,142	1,456,632	1,097,793
Food Distribution [Member] | Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,185,390	1,085,282	907,351
Food Distribution [Member] | Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									78,544	79,163	40,567
Food Distribution [Member] | Manufacturers, brokers and distributors [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									197,128	210,004
Food Distribution [Member] | Retailers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									3,733,254	3,556,591	3,246,872
Food Distribution [Member] | Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									61,068	61,314	34,153
Military [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,166,843	2,144,022	2,197,014
Military [Member] | Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,052,462	1,054,590	1,105,992
Military [Member] | Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									602,023	577,084	559,449
Military [Member] | Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									506,177	507,394	525,915
Military [Member] | Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									6,181	4,954	5,658
Military [Member] | Manufacturers, brokers and distributors [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									2,089,765	2,119,601	2,191,356
Military [Member] | Retailers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									70,897	19,467
Military [Member] | Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									6,181	4,954	5,658
Retail [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,906,259	1,991,868	2,083,045
Retail [Member] | Center store [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									747,708	792,925	841,161
Retail [Member] | Fresh [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									688,661	734,564	785,566
Retail [Member] | Non-food [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									330,342	336,630	344,531
Retail [Member] | Other Products [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									931	1,076	1,168
Retail [Member] | Fuel [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									138,617	126,673	110,619
Retail [Member] | Individuals Customer [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									1,905,328	1,990,792	2,081,877
Retail [Member] | Other Customers [Member]
Disaggregation Of Revenue [Line Items]
Total revenue									$ 931	$ 1,076	$ 1,168

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