Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,362,753	$ 1,117,654	$ 1,020,661
Other comprehensive income (loss):
Change in unrealized loss on investments, net of tax	(64)	(91)	(148)
Comprehensive income	$ 1,362,689	$ 1,117,563	$ 1,020,513