Segment Reporting - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 27, 2022	Aug. 28, 2021	Aug. 27, 2022	Aug. 28, 2021
Segment Reporting
Revenues	$ 5,901,069	$ 6,113,000	$ 11,915,652	$ 12,273,985
Gross Profit	1,154,495	1,245,924	2,351,224	2,530,799
Adjusted EBITDA	78,549	106,160	178,679	245,037
Additions to property and equipment and intangible assets	52,175	55,235	137,599	119,835
Retail Pharmacy
Segment Reporting
Revenues	4,231,791	4,277,218	8,577,147	8,628,900
Operating segments | Retail Pharmacy
Segment Reporting
Revenues	4,231,791	4,277,218	8,577,147	8,628,900
Gross Profit	1,043,036	1,140,362	2,140,393	2,310,296
Adjusted EBITDA	31,484	69,369	105,166	164,283
Additions to property and equipment and intangible assets	46,343	50,548	124,894	111,441
Operating segments | Pharmacy Services
Segment Reporting
Revenues	1,727,241	1,898,213	3,453,098	3,770,495
Gross Profit	111,459	105,562	210,831	220,503
Adjusted EBITDA	47,065	36,791	73,513	80,754
Additions to property and equipment and intangible assets	5,832	4,687	12,705	8,394
Intersegment eliminations
Segment Reporting
Revenues	(57,963)	(62,431)	(114,593)	(125,410)
Gross Profit
Adjusted EBITDA
Additions to property and equipment and intangible assets