Summary of Significant Accounting Policies (Details 2)	12 Months Ended
	Mar. 02, 2013	Mar. 03, 2012	Feb. 26, 2011
Fiscal Year
Length of reporting period	364 days	371 days	364 days
Prescription drugs
Product Class
Percentage of sales	67.60%	68.10%	67.80%
Over-the-counter medications and personal care
Product Class
Percentage of sales	9.90%
Health and beauty aids
Product Class
Percentage of sales	5.20%
General merchandise and other
Product Class
Percentage of sales	17.30%