Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 07, 2013	Sep. 08, 2012	Sep. 07, 2013	Sep. 08, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net earnings (loss)	$ 40	$ (111)	$ 125	$ (70)
Other comprehensive income:
Amortization of actuarial loss on pension and other postretirement benefit obligations, net of tax of $8, $7, $19, and $20, respectively	13	19	31	40
Comprehensive income (loss)	$ 53	$ (92)	$ 156	$ (30)