Investments (Details) (USD $) In Millions, unless otherwise specified	Aug. 03, 2012	Feb. 03, 2012
Investments:
Short-term investments	$ 372	$ 966
Long-term investments	2,738	3,404
Total investments at fair value	3,110	4,370
Total investments at amortized cost	3,090	4,356
Unrealized gains of investments	20	17
Unrealized losses of investments	0	(3)
Short-term Investments
Investments:
Amortized cost of debt securities	372	965
Unrealized gains of investments	0	1
Unrealized losses of investments	0	0
Short-term Investments \| Non- U.S. government and agencies
Investments:
Fair value of debt securities	19	24
Amortized cost of debt securities	19	24
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Short-term Investments \| Commercial paper
Investments:
Fair value of debt securities	13	434
Amortized cost of debt securities	13	434
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Short-term Investments \| U.S. corporate
Investments:
Fair value of debt securities	277	336
Amortized cost of debt securities	277	335
Unrealized gains of investments	0	1
Unrealized losses of investments	0	0
Short-term Investments \| International corporate
Investments:
Fair value of debt securities	63	172
Amortized cost of debt securities	63	172
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Long-term investments
Investments:
Amortized cost of debt securities	2,718	3,391
Unrealized gains of investments	20	16
Unrealized losses of investments	0	(3)
Long-term investments \| Non- U.S. government and agencies
Investments:
Fair value of debt securities	122	70
Amortized cost of debt securities	122	70
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Long-term investments \| U.S. corporate
Investments:
Fair value of debt securities	1,799	2,332
Amortized cost of debt securities	1,785	2,322
Unrealized gains of investments	14	12
Unrealized losses of investments	0	(2)
Long-term investments \| International corporate
Investments:
Fair value of debt securities	693	883
Amortized cost of debt securities	687	880
Unrealized gains of investments	6	4
Unrealized losses of investments	0	(1)
Long-term investments \| Equity and other securities
Investments:
Fair value of equity and other securities	124	119
Amortized cost of equity and other securities	124	119
Unrealized gains of investments	0	0
Unrealized losses of investments	$ 0	$ 0

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Equity and Other Securities, Fair Value

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities and Trading Securities which consist of all investments not classified as held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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