Segment Reporting - Balance Sheet information (Details) $ in Thousands	12 Months Ended
	Mar. 04, 2023 USD ($) segment	Feb. 26, 2022 USD ($)	Feb. 27, 2021 USD ($)
Segment Reporting
Number of reportable segments | segment	2
Total Assets	$ 7,527,362	$ 8,529,003
Goodwill	507,936	879,136	$ 1,108,136
Accounts receivable	1,149,958	1,343,496
Retail Pharmacy Segment
Segment Reporting
Goodwill	43,492	43,492	43,492
Pharmacy Services Segment
Segment Reporting
Goodwill	464,444	835,644	$ 1,064,644
Operating Segments | Retail Pharmacy Segment
Segment Reporting
Total Assets	5,487,845	6,068,594
Goodwill	43,492	43,492
Operating Segments | Pharmacy Services Segment
Segment Reporting
Total Assets	2,049,107	2,482,232
Goodwill	464,444	835,644
Intersegment elimination
Segment Reporting
Total Assets	(9,590)	(21,823)
Goodwill
Accounts receivable	$ 9,590	$ 21,823