Consolidated Segment Financial Information (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended
	Feb. 25, 2012	Dec. 03, 2011	Feb. 25, 2012	Feb. 26, 2011	Feb. 26, 2011 Retail food [Member]	Sep. 11, 2010 Retail food [Member]	Feb. 25, 2012 Retail food [Member]	Feb. 26, 2011 Retail food [Member]
Goodwill and intangible asset impairment charges	$ 525	$ 907	$ 1,432	$ 1,870	$ 30	$ 1,840	$ 1,432	$ 1,870