Business Combinations (Tables)

12 Months Ended

Jan. 29, 2012

Notes to financial statements [Abstract]

Fair value of assets and liabilities

:

Intangible Assets assumed in acquisition

Intangible assets	Fair Value		Weighted-average estimated useful lives
	(In thousands)		(In years)
Technology	$	58,300	7.4
In-process technology	$	20,200	indefinite
Customer relationships	$	18,200	6.8

Supplemental Pro Forma Data

	Year ended
	January 29, 2012		January 30, 2011
	(In thousands, except per share data)
Pro forma net revenue	$	4,018,330	$	3,591,409
Pro forma net income	$	556,516	$	179,566
Pro forma net income per share (basic)	$	0.92	$	0.31
Pro forma net income per share (diluted)	$	0.90	$	0.31