Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 07, 2013	Sep. 08, 2012	Sep. 07, 2013	Sep. 08, 2012
Income Tax Disclosure [Abstract]
Discrete tax benefit	$ 0	$ 7	$ 2	$ 7
Discrete tax expense	0	6	2	6
Unrecognized tax benefits decreased			$ 151
Number of months within which company does not anticipate significant change in unrecognized tax benefits			12 months