Investments (Details) (USD $) In Millions, unless otherwise specified	May 04, 2012	Feb. 03, 2012
Investments:
Unrealized gains of investments	$ 21	$ 17
Unrealized losses of investments	(1)	(3)
Total investments at amortized cost	4,382	4,356
Total investments at fair value	4,402	4,370
Short-term Investments
Investments:
Amortized cost of debt securities	900	965
Unrealized gains of investments	1	1
Unrealized losses of investments	0	0
Fair value of debt securities	901	966
Short-term Investments \| Non- U.S. government and agencies
Investments:
Amortized cost of debt securities	30	24
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Fair value of debt securities	30	24
Short-term Investments \| Commercial paper
Investments:
Amortized cost of debt securities	314	434
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Fair value of debt securities	314	434
Short-term Investments \| U.S. corporate
Investments:
Amortized cost of debt securities	393	335
Unrealized gains of investments	1	1
Unrealized losses of investments	0	0
Fair value of debt securities	394	336
Short-term Investments \| International corporate
Investments:
Amortized cost of debt securities	163	172
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Fair value of debt securities	163	172
Long-term investments
Investments:
Amortized cost of debt securities	3,482	3,391
Unrealized gains of investments	20	16
Unrealized losses of investments	(1)	(3)
Fair value of debt securities	3,501	3,404
Amortized cost of equity and other securities	126	119
Fair value of equity and other securities	126	119
Long-term investments \| Non- U.S. government and agencies
Investments:
Amortized cost of debt securities	123	70
Unrealized gains of investments	0	0
Unrealized losses of investments	0	0
Fair value of debt securities	123	70
Long-term investments \| U.S. corporate
Investments:
Amortized cost of debt securities	2,395	2,322
Unrealized gains of investments	15	12
Unrealized losses of investments	(1)	(2)
Fair value of debt securities	2,409	2,332
Long-term investments \| International corporate
Investments:
Amortized cost of debt securities	838	880
Unrealized gains of investments	5	4
Unrealized losses of investments	0	(1)
Fair value of debt securities	843	883
Long-term investments \| Equity and other securities
Investments:
Unrealized gains of investments	0	0
Unrealized losses of investments	$ 0	$ 0

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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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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- Definition

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 which consist of all investments in certain debt and equity securities neither classified as trading or 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. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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