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. 08, 2018	Sep. 09, 2017	Sep. 08, 2018	Sep. 10, 2016
Property, Plant and Equipment [Abstract]
Carrying value	$ 145	$ 0	$ 150	$ 0
Fair value measured using Level 3 inputs	100	0	101	0
Impairment charge	$ 45	$ 0	$ 49	$ 0