Revenue Recogntion Revenue Recognition-Summary of Information about Disaggregated Revenue of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 08, 2018	Sep. 09, 2017	Sep. 08, 2018	Sep. 09, 2017
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	$ 3,512	$ 3,449	$ 8,267	$ 6,966
Retailers
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	2,759	2,667	6,474	5,130
Military
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	98	106	231	249
Individuals
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	645	664	1,539	1,563
Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	10	12	23	24
Nonperishable grocery products(1)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	2,294	2,208	5,394	4,445
Perishable grocery products(2)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	1,073	1,086	2,528	2,165
Pharmacy products
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	67	67	157	159
Services revenue
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	58	72	144	160
Equipment sales
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	9	6	18	15
Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	11	10	26	22
Wholesale
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	2,837	2,738	6,651	5,294
Wholesale | Retailers
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	2,734	2,627	6,409	5,035
Wholesale | Military
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	98	106	231	249
Wholesale | Individuals
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Wholesale | Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	5	5	11	10
Wholesale | Nonperishable grocery products(1)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	1,946	1,847	4,563	3,596
Wholesale | Perishable grocery products(2)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	843	850	1,977	1,610
Wholesale | Pharmacy products
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Wholesale | Services revenue
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	30	27	71	55
Wholesale | Equipment sales
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	9	6	18	15
Wholesale | Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	9	8	22	18
Retail
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	650	671	1,551	1,577
Retail | Retailers
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Retail | Military
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Retail | Individuals
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	645	664	1,539	1,563
Retail | Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	5	7	12	14
Retail | Nonperishable grocery products(1)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	348	361	831	849
Retail | Perishable grocery products(2)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	230	236	551	555
Retail | Pharmacy products
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	67	67	157	159
Retail | Services revenue
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	3	5	8	10
Retail | Equipment sales
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Retail | Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	2	2	4	4
Corporate
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	25	40	65	95
Corporate | Retailers
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	25	40	65	95
Corporate | Military
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Individuals
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Nonperishable grocery products(1)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Perishable grocery products(2)
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Pharmacy products
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Services revenue
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	25	40	65	95
Corporate | Equipment sales
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	0	0	0	0
Corporate | Other
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Net sales	$ 0	$ 0	$ 0	$ 0