Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 338,108	$ 274,449	$ 1,145,764	$ 912,006	[1]
Other comprehensive (loss) income:
Change in unrealized loss on investments, net of tax	(4)	(19)	(27)	(51)
Comprehensive income	$ 338,104	$ 274,430	$ 1,145,737	$ 911,955

[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.