CONDENSED CONSOLIDATED STATEMENT OF COMPREHNSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2013	Oct. 28, 2012	Oct. 27, 2013	Oct. 28, 2012
Net income	$ 118,734	$ 209,080	$ 293,073	$ 388,563
Net change in unrealized gains (losses) on available-for-sale securities, net of tax	8	(269)	(2,978)	497
Reclassification adjustments for net realized gains on available-for-sale securities included in net income, net of tax	(43)	(31)	(1,141)	(251)
Other comprehensive income (loss), net of tax	(35)	(300)	(4,119)	246
Total comprehensive income	$ 118,699	$ 208,780	$ 288,954	$ 388,809