Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 02, 2013	Oct. 27, 2012	Nov. 02, 2013	Oct. 27, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 171,618	$ 159,524	$ 619,351	$ 550,161
Other comprehensive income:
Change in unrealized (loss) gain on investments, net of tax	(3)	(7)	(149)	9
Comprehensive income	$ 171,615	$ 159,517	$ 619,202	$ 550,170