Reserves for Closed Properties and Property, Plant and Equipment-Related Impairment Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 22, 2014	Feb. 23, 2013	Feb. 25, 2012
Significant Activity In Property Plant And Equipment [Line Items]
Property, Plant and equipment related assets carrying value	$ 45	$ 291	$ 10
Impairment charges	24	251	3
Property, plant and equipment related assets fair value	21	40	7
Save-A-Lot [Member]
Significant Activity In Property Plant And Equipment [Line Items]
Impairment charges		$ 10
Number of non - strategic stores closed		22