Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Treasury stock	Accumulated other comprehensive income (loss)	Retained earnings
Total common stock, beginning balance (in shares) at Feb. 03, 2018		379,618
Total stockholders’ equity, beginning balance at Feb. 03, 2018	$ 3,049,308	$ 3,796	$ 1,292,364	$ (318,279)	$ 27	$ 2,071,400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	418,252					418,252
Unrealized investment loss, net	(20)				(20)
Common stock issued under stock planes, net of shares used for tax withholding (in shares)		732
Common stock issued under stock planes, net of shares used for tax withholding	(40,116)	$ 8	4,674	(44,798)
Stock-based compensation	23,760		23,760	0
Common stock repurchased (in shares)		(3,271)
Common stock repurchased	(255,370)	$ (33)	(8,093)			(247,244)
Dividends declared	(85,410)					(85,410)
Total common stock, ending balance (in shares) at May. 05, 2018		377,079
Total stockholders’ equity, ending balance at May. 05, 2018	$ 3,130,288	$ 3,771	1,312,705	(363,077)	7	2,176,882
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.225
Total common stock, beginning balance (in shares) at Feb. 03, 2018		379,618
Total stockholders’ equity, beginning balance at Feb. 03, 2018	$ 3,049,308	$ 3,796	1,292,364	(318,279)	27	2,071,400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	807,656
Unrealized investment loss, net	(23)
Total common stock, ending balance (in shares) at Aug. 04, 2018		373,868
Total stockholders’ equity, ending balance at Aug. 04, 2018	3,184,610	$ 3,739	1,333,329	(369,340)	4	2,216,878
Total common stock, beginning balance (in shares) at May. 05, 2018		377,079
Total stockholders’ equity, beginning balance at May. 05, 2018	3,130,288	$ 3,771	1,312,705	(363,077)	7	2,176,882
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	389,404					389,404
Unrealized investment loss, net	(3)				(3)
Common stock issued under stock planes, net of shares used for tax withholding (in shares)		20
Common stock issued under stock planes, net of shares used for tax withholding	(1,128)		5,135	(6,263)
Stock-based compensation	23,820		23,820	0
Common stock repurchased (in shares)		(3,231)
Common stock repurchased	(273,210)	$ (32)	(8,331)			(264,847)
Dividends declared	(84,561)					(84,561)
Total common stock, ending balance (in shares) at Aug. 04, 2018		373,868
Total stockholders’ equity, ending balance at Aug. 04, 2018	$ 3,184,610	$ 3,739	1,333,329	(369,340)	4	2,216,878
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.225
Total common stock, beginning balance (in shares) at Feb. 02, 2019		368,242
Total stockholders’ equity, beginning balance at Feb. 02, 2019	$ 3,305,746	$ 3,682	1,375,965	(372,663)	0	2,298,762
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	421,142					421,142
Common stock issued under stock planes, net of shares used for tax withholding (in shares)		390
Common stock issued under stock planes, net of shares used for tax withholding	(45,585)	$ 4	5,291	(50,880)
Stock-based compensation	19,689		19,689
Common stock repurchased (in shares)		(3,372)
Common stock repurchased	(320,130)	$ (33)	(9,387)			(310,710)
Dividends declared	(93,722)					(93,722)
Total common stock, ending balance (in shares) at May. 04, 2019		365,260
Total stockholders’ equity, ending balance at May. 04, 2019	$ 3,267,526	$ 3,653	1,391,558	(423,543)	0	2,295,858
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.255
Total common stock, beginning balance (in shares) at Feb. 02, 2019		368,242
Total stockholders’ equity, beginning balance at Feb. 02, 2019	$ 3,305,746	$ 3,682	1,375,965	(372,663)	0	2,298,762
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	833,863
Unrealized investment loss, net	0
Total common stock, ending balance (in shares) at Aug. 03, 2019		362,166
Total stockholders’ equity, ending balance at Aug. 03, 2019	3,296,264	$ 3,622	1,412,976	(425,012)	0	2,304,678
Total common stock, beginning balance (in shares) at May. 04, 2019		365,260
Total stockholders’ equity, beginning balance at May. 04, 2019	3,267,526	$ 3,653	1,391,558	(423,543)	0	2,295,858
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	412,721					412,721
Unrealized investment loss, net	0
Common stock issued under stock planes, net of shares used for tax withholding (in shares)		98
Common stock issued under stock planes, net of shares used for tax withholding	4,142	$ 1	5,610	(1,469)
Stock-based compensation	24,924		24,924
Common stock repurchased (in shares)		(3,192)
Common stock repurchased	(320,129)	$ (32)	(9,116)			(310,981)
Dividends declared	(92,920)					(92,920)
Total common stock, ending balance (in shares) at Aug. 03, 2019		362,166
Total stockholders’ equity, ending balance at Aug. 03, 2019	$ 3,296,264	$ 3,622	$ 1,412,976	$ (425,012)	$ 0	$ 2,304,678
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.255