Derivative Instruments and Hedging Activites (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Oct. 28, 2011	Oct. 29, 2010	Oct. 28, 2011 month	Oct. 29, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Maximum Remaining Maturity of Foreign Currency Derivatives	12		12
Gain (loss) on foreign currency forward contracts	$ 55	$ (6)	$ 65	$ 52
Contracts lower range (in months)			30
Contracts upper range (in months)			42
Change in net unrealized gain or loss on derivative instruments, net of taxes	$ 63	$ (105)	$ 85	$ (219)

Change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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