Basis of Presentation and Significant Accounting Policies - Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 27, 2022	Aug. 28, 2021	Aug. 27, 2022	Aug. 28, 2021
Product Class
Total revenue	$ 5,901,069	$ 6,113,000	$ 11,915,652	$ 12,273,985
Intersegment eliminations
Product Class
Total revenue	(57,963)	(62,431)	(114,593)	(125,410)
Retail Pharmacy
Product Class
Other revenue	28,965	30,317	59,667	63,257
Total revenue	4,231,791	4,277,218	8,577,147	8,628,900
Retail Pharmacy | Pharmacy sales
Product Class
Revenues	2,971,236	2,939,656	6,024,684	5,936,700
Retail Pharmacy | Front end sales
Product Class
Revenues	1,231,590	1,307,245	2,492,796	2,628,943
Pharmacy Services
Product Class
Revenues	$ 1,727,241	$ 1,898,213	$ 3,453,098	$ 3,770,495