Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Nov. 30, 2013	Dec. 01, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net earnings (loss)	$ 31	$ 16	$ 156	$ (54)
Other comprehensive income:
Amortization of actuarial loss on pension and other postretirement benefit obligations, net of tax of $9, $10, $28 and $30, respectively	13	16	44	56
Comprehensive income	$ 44	$ 32	$ 200	$ 2