Reserves for Closed Properties and Property, Plant and Equipment-Related Impairment Charges - Summary of Fair Values for Property, Plant and Equipment Assets Measured at Fair Value on a Non-Recurring Basis (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
Property, Plant and Equipment [Abstract]
Carrying value	$ 2		$ 2	$ 21
Fair value measured using Level 3 inputs	1		1	5
Impairment charge	$ 1		$ 1	$ 16