Comprehensive Income and Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss (Detail) (USD $) In Millions, unless otherwise specified	4 Months Ended
	Jun. 14, 2014	Jun. 15, 2013
Equity [Abstract]
Pension and postretirement benefit plan accumulated other comprehensive loss at beginning of the fiscal year, net of tax	$ 307	$ 612
Other comprehensive (income) loss before reclassifications, net of tax expense of $0 and $0, respectively	0	0
Amortization of amounts included in net periodic benefit cost, net of tax expense of $5 and $11, respectively	(11)	(18)
Net current-period Other comprehensive income, net of tax expense of $5 and $11, respectively	(11)	(18)
Divestiture of NAI pension plan accumulated other comprehensive income, net of tax expense of $0 and $31, respectively		(48)
Pension and postretirement benefit plan accumulated other comprehensive loss at the end of period, net of tax	$ 296	$ 546