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	3 Months Ended		6 Months Ended
	Sep. 09, 2017	Sep. 10, 2016	Sep. 09, 2017	Sep. 10, 2016
Property, Plant and Equipment [Abstract]
Carrying value	$ 98	$ 1	$ 98	$ 3
Fair value measured using Level 3 inputs	56	0	56	2
Impairment charge	42	$ 1	$ 42	$ 1
Impairment of Long-Lived Assets Held-for-use	$ 42