Summary of Significant Accounting Policies (Details 5)			12 Months Ended
	Mar. 01, 2014 derivative	Mar. 02, 2013 derivative	Mar. 01, 2014 Pharmacy sales Customers Top five third party payors	Mar. 01, 2014 Pharmacy sales Customers Largest third party payor Express Scripts	Mar. 02, 2013 Pharmacy sales Customers Largest third party payor Express Scripts	Mar. 03, 2012 Pharmacy sales Customers Largest third party payor Medco Health Solutions	Mar. 01, 2014 Pharmacy sales Customers Medicaid agencies and related managed care Medicaid payors	Mar. 01, 2014 Pharmacy sales Customers Largest Medicaid agency	Mar. 01, 2014 Pharmacy sales Customers Medicare Part D	Mar. 01, 2014 Purchases Suppliers McKesson Corp.
Significant Concentrations
Percentage of concentration risk			65.80%	31.60%	35.30%	22.90%	13.70%	1.10%	30.60%	88.20%
Derivatives
Number of interest rate swap arrangements or other derivatives held	0	0