Other Non Current Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 28, 2012	Jan. 28, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Technology and other licenses	$ 46,384	$ 50,212
Deferred tax assets	30,966	31,064
Deposits	12,082	11,532
Investments in privately held companies	11,676	6,309
Deferred compensation	2,910	5,419
Other	5,578	3,610
Other non-current assets	$ 109,596	$ 108,146