Condended Consolidated Segment Financial Information (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Dec. 03, 2011	Dec. 04, 2010	Dec. 03, 2011	Dec. 04, 2010
Goodwill and intangible asset impairment charges	$ 907	$ 240	$ 907	$ 1,840
Retail food [Member]
Goodwill and intangible asset impairment charges	$ 907	$ 240	$ 907	$ 1,840

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

No definition available.

Name:	us-gaap_GoodwillAndIntangibleAssetImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration