Basis of Presentation and Significant Accounting Policies (Details) $ in Thousands		3 Months Ended
	Jan. 02, 2020 item	May 29, 2021 USD ($)	May 30, 2020 USD ($)	Feb. 27, 2021 USD ($)
Disaggregation of Revenue [Abstract]
Total revenue		$ 6,160,985	$ 6,027,376
Measurement period	6 months
Number of points for Gold status | item	500
Percentage discount on qualifying purchases of front end merchandise on achieving "Gold" tier	20.00%
Liability recognized into revenue		1,613
Intersegment elimination
Disaggregation of Revenue [Abstract]
Revenue from contract with customer		(62,979)	(73,141)
Total revenue		(62,979)	(73,141)
Retail Pharmacy
Disaggregation of Revenue [Abstract]
Other revenue		32,939	32,260
Total revenue		4,351,682	4,123,271
Accrued contract liabilities		2,141		$ 3,754
Pharmacy sales
Disaggregation of Revenue [Abstract]
Revenue from contract with customer		2,997,044	2,625,544
Front end sales
Disaggregation of Revenue [Abstract]
Revenue from contract with customer		1,321,699	1,465,467
Pharmacy Services
Disaggregation of Revenue [Abstract]
Revenue from contract with customer		$ 1,872,282	$ 1,977,246