Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 26, 2011 segments	Nov. 27, 2010	Nov. 26, 2011	Nov. 27, 2010	Feb. 26, 2011
Business segment information
Total revenue	$ 12,099	$ 11,890	$ 34,386	$ 34,016
Operating income (loss)	178	385	747	1,109
Other income (expense)
Gain on sale of investments	55	0	55	0
Investment income and other	8	8	26	33
Interest expense	(37)	(20)	(102)	(64)
Earnings before income tax expense and equity in loss of affiliates	204	373	726	1,078
Total Assets	22,748	22,352	22,748	22,352	17,849
Number of Segments	2
Domestic
Business segment information
Total revenue	8,885	8,710	25,055	25,069
Operating income (loss)	207	340	744	1,045
Other income (expense)
Total Assets	14,049	13,949	14,049	13,949	9,610
International
Business segment information
Total revenue	3,214	3,180	9,331	8,947
Operating income (loss)	(29)	45	3	64
Other income (expense)
Total Assets	$ 8,699	$ 8,403	$ 8,699	$ 8,403	$ 8,239