Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended			3 Months Ended
	Sep. 08, 2012	Sep. 08, 2012	Sep. 10, 2011	Sep. 08, 2012 Fair Value, Inputs, Level 3 [Member]	Sep. 08, 2012 Fair Value, Inputs, Level 3 [Member] 60 Under performing or Non-Strategic Stores [Member]	Sep. 08, 2012 Fair Value, Inputs, Level 3 [Member] Held And Used Stores [Member]	Sep. 08, 2012 Retail Food [Member]
Intangible Assets By Major Class [Line Items]
Non-cash impairment charge		$ 74					$ 74
Impairment charges for favorable operating lease intangible assets				14	12
Impairment charges for stores that are held and used						2
Amortization Expense of intangible assets	27		31
Future amortization expense, Year One	29	29
Future amortization expense, Year Two	29	29
Future amortization expense, Year Three	29	29
Future amortization expense, Year Four	29	29
Future amortization expense, Year Five	$ 29	$ 29