Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 04, 2023	Aug. 27, 2022	Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021
Carrying amount of goodwill
Beginning Balance			$ 879,136	$ 1,108,136
Goodwill impairment			(371,200)	(229,000)	$ 0
Ending Balance	$ 507,936		507,936	879,136	1,108,136
Retail Pharmacy Segment
Carrying amount of goodwill
Beginning Balance			43,492	43,492
Goodwill impairment
Ending Balance	43,492		43,492	43,492	43,492
Pharmacy Services Segment
Carrying amount of goodwill
Beginning Balance			835,644	1,064,644
Goodwill impairment	(119,000)	$ (252,200)	(371,200)	(229,000)
Ending Balance	$ 464,444		$ 464,444	$ 835,644	$ 1,064,644