Fair Value Measurements (Details) (USD $) In Millions	May 28, 2011	Feb. 26, 2011	May 29, 2010
Fair Value
Cash and cash equivalents
Money market funds	$ 972	$ 70	$ 232
U.S. Treasury bills	80		200
Commercial paper	15
Short-term investments
Money market fund		2	2
U.S. Treasury bills	20	20	150
Auction rate securities			53
Other current assets
Money market funds (restricted assets)	109	63	120
U.S. Treasury bills (restricted assets)	65	105	10
Foreign currency derivative instruments	9	2	1
Equity and other investments
Auction-rate securities	99	110	180
Marketable equity securities	145	146	87
Other assets
Marketable equity securities that fund deferred compensation	86	83	79
Foreign currency derivative instruments	2		1
Accrued liabilities
Foreign currency derivative instruments		1
Long-term liabilities
Deferred compensation	68	64	66
Foreign currency derivative instruments		2
Quoted Prices in Active Markets for Identical Assets (Level 1)
Cash and cash equivalents
Money market funds	972	70	232
U.S. Treasury bills	80		200
Short-term investments
U.S. Treasury bills	20	20	150
Other current assets
Money market funds (restricted assets)	109	63	120
U.S. Treasury bills (restricted assets)	65	105	10
Equity and other investments
Marketable equity securities	145	146	87
Other assets
Marketable equity securities that fund deferred compensation	86	83	79
Long-term liabilities
Deferred compensation	68	64	66
Significant Other Observable Inputs (Level 2)
Cash and cash equivalents
Commercial paper	15
Short-term investments
Money market fund		2	2
Other current assets
Foreign currency derivative instruments	9	2	1
Other assets
Foreign currency derivative instruments	2		1
Accrued liabilities
Foreign currency derivative instruments		1
Long-term liabilities
Foreign currency derivative instruments		2
Significant Unobservable Inputs (Level 3)
Short-term investments
Auction rate securities			53
Equity and other investments
Auction-rate securities	$ 99	$ 110	$ 180