Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 389,404	$ 316,539	$ 807,656	$ 637,557	[1]
Other comprehensive (loss) income:
Change in unrealized loss on investments, net of tax	(3)	(16)	(23)	(32)
Comprehensive income	$ 389,401	$ 316,523	$ 807,633	$ 637,525

[1] As the result of the adoption of ASU 2016-18, Statement of Cash Flow (Topic 230): Restricted Cash, the prior year amounts were retrospectively adjusted to include restricted cash and cash equivalents. See Note A.