Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Oct. 29, 2011	Jan. 29, 2011	Oct. 30, 2010
Assets:
Cash equivalents	$ 477	$ 604	$ 459
Short-term investments	25	100	251
Derivative financial instruments	7	4	4
Deferred compensation plan assets	23	27	26
Total	532	735	740
Liabilities:
Derivative financial instruments	37	37	56
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Cash equivalents
Short-term investments
Derivative financial instruments
Deferred compensation plan assets	23	27	26
Total	23	27	26
Liabilities:
Derivative financial instruments
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents	477	604	459
Short-term investments	25	100	251
Derivative financial instruments	7	4	4
Deferred compensation plan assets
Total	509	708	714
Liabilities:
Derivative financial instruments	37	37	56
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents
Short-term investments
Derivative financial instruments
Deferred compensation plan assets
Total
Liabilities:
Derivative financial instruments