Intangible Assets (Tables)

9 Months Ended

Oct. 30, 2011

Notes to financial statements [Abstract]

Amortizable Intangible Assets Components

	October 30, 2011							January 30, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(In thousands)
Technology licenses	$	320,310	$	(89,304	)	$	231,006	$	320,477	$	(62,791	)	$	257,686
Acquisition-related intangible assets	172,039		(74,057		)	97,982		75,339		(61,114		)	14,225
Patents	32,673		(18,822		)	13,851		32,203		(15,369		)	16,834
Total intangible assets	$	525,022	$	(182,183	)	$	342,839	$	428,019	$	(139,274	)	$	288,745