Investments (Tables)

9 Months Ended

Oct. 28, 2011

Investments, Debt and Equity Securities [Abstract]

Marketable Securities [Text Block]

	October 28, 2011									January 28, 2011
	Fair Value		Cost		Unrealized Gain		Unrealized (Loss)			Fair Value		Cost		Unrealized Gain		Unrealized (Loss)
	(in millions)
Investments:
U.S. government and agencies	$	—	$	—	$	—	$	—		$	58	$	58	$	—	$	—
U.S. corporate	260		260		—		—			254		253		1		—
International corporate	285		285		—		—			140		140		—		—
Total short-term investments	545		545		—		—			452		451		1		—
U.S. government and agencies	—		—		—		—			21		20		1		—
U.S. corporate	1,480		1,481		2		(3		)	242		243		—		(1		)
International corporate	521		522		1		(2		)	317		317		—		—
Equity and other securities	182		122		60		—			124		124		—		—
Total long-term investments	2,183		2,125		63		(5		)	704		704		1		(1		)
Total investments	$	2,728	$	2,670	$	63	$	(5	)	$	1,156	$	1,155	$	2	$	(1	)