Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 837,304	$ 786,763	$ 657,170
Other comprehensive income:
Change in unrealized (loss) gain on investments, net of tax	(196)	(50)	147
Comprehensive income	$ 837,108	$ 786,713	$ 657,317