Comprehensive Income and Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss (Parenthetical) (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
Equity [Abstract]
Other comprehensive (income) loss before reclassifications, amount of tax expense			$ 0	$ 0
Amortization of amounts included in net periodic benefit cost, amount of tax expense			10	19
Other comprehensive income, tax	5	8	10	19
Pension plan accumulated other comprehensive income, tax	$ 0	$ 31	$ 0	$ 31