Discontinued Operations and Divestitures - Summary of Assets and Liabilities of Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	Feb. 23, 2013	Feb. 25, 2012
Assets
Cash and cash equivalents	$ 77	$ 93
Total current assets	1,494
Liabilities
Total current liabilities of discontinued operations	2,701
NAI Banners [Member]
Assets
Cash and cash equivalents	77
Receivables, net	215
Inventories, net	1,155
Other current assets	47
Total current assets	1,494
Property, plant and equipment, net	3,767
Intangible assets, net	555
Other assets	655
Total assets	6,471
Liabilities
Accounts payable	652
Accrued vacation, compensation and benefits	217
Current maturities of long-term debt and capital lease obligations	212
Accrued loss on contract	1,140
Other current liabilities	480
Total current liabilities of discontinued operations	2,701
Long-term debt and capital lease obligations	2,832
Pension and other postretirement benefit obligations	109
Other long-term liabilities	850
Total liabilities	6,492
Net liabilities of discontinued operations	$ (21)