Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 412,721	$ 389,404	$ 833,863	$ 807,656
Other comprehensive (loss) income:
Change in unrealized gain (loss) on investments, net of tax	0	(3)	0	(23)
Comprehensive income	$ 412,721	$ 389,401	$ 833,863	$ 807,633