Derivative Instruments (Foreign Exchange Contracts - Cash Flow Hedging Disclosure) (Details) (USD $) In Millions	3 Months Ended
	Apr. 30, 2011		May 01, 2010
Other Comprehensive Income (Loss) [Member]
(Loss) Recognized in Other Comprehensive Income (Loss)	$ (28)		$ (13)
Other Income [Member]
Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Other Income	$ 28	[1]	$ 23	[1]

[1] Represents reclassification of amounts from accumulated other comprehensive income (loss) to earnings to completely offset foreign currency transaction gains and losses recognized on the intercompany loans. No ineffectiveness was associated with these foreign exchange cash flow hedges.