Segment Reporting - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	May 28, 2022	May 29, 2021
Segment Reporting
Revenues	$ 6,014,583	$ 6,160,985
Gross Profit	1,196,729	1,284,875
Adjusted EBITDA	100,130	138,877
Additions to property and equipment and intangible assets	85,424	64,600
Retail Pharmacy
Segment Reporting
Revenues	4,345,356	4,351,682
Operating segments | Retail Pharmacy
Segment Reporting
Revenues	4,345,356	4,351,682
Gross Profit	1,097,357	1,169,934
Adjusted EBITDA	73,682	94,914
Additions to property and equipment and intangible assets	78,551	60,893
Operating segments | Pharmacy Services
Segment Reporting
Revenues	1,725,857	1,872,282
Gross Profit	99,372	114,941
Adjusted EBITDA	26,448	43,963
Additions to property and equipment and intangible assets	6,873	3,707
Intersegment elimination
Segment Reporting
Revenues	$ (56,630)	$ (62,979)