Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 06, 2014	Sep. 07, 2013	Sep. 06, 2014	Sep. 07, 2013	Feb. 22, 2014
Accounting Policies [Abstract]
Number of weeks in first quarter			16 weeks
Number of weeks in second and third quarter			12 weeks
Number of weeks in fourth quarter			13 weeks
Number of weeks in current fiscal year			53 weeks
Net book overdrafts	$ 148		$ 148		$ 134
LIFO charge recorded	2	(1)	4	(1)
Value increase in inventory by changing the method from LIFO to FIFO	$ 206		$ 206		$ 202