CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Exchangeable Stock	Special Voting Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Feb. 03, 2019		9,332	9,332	121,600
Beginning balance at Feb. 03, 2019	$ 1,445,975		$ 0	$ 608	$ 315,285	$ 1,346,890	$ (216,808)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	347,575					347,575
Foreign currency translation adjustment	(1,329)						(1,329)
Common stock issued upon exchange of exchangeable shares (in shares)		(2,372)	(2,372)	2,372
Common stock issued upon exchange of exchangeable shares				$ 12	(12)
Stock-based compensation expense	36,070				36,070
Common stock issued upon settlement of stock-based compensation (in shares)				547
Common stock issued upon settlement of stock-based compensation	15,030			$ 3	15,027
Shares withheld related to net share settlement of stock-based compensation (in shares)				(129)
Shares withheld related to net share settlement of stock-based compensation	$ (21,493)			$ (1)	(21,492)
Repurchase of common stock (in shares)	(1,100)			(1,054)
Repurchase of common stock	$ (173,092)			$ (5)	(1,543)	(171,544)
Ending balance (in shares) at Nov. 03, 2019		6,960	6,960	123,336
Ending balance at Nov. 03, 2019	1,648,736		$ 0	$ 617	343,335	1,522,921	(218,137)
Beginning balance (in shares) at Aug. 04, 2019		7,381	7,381	122,921
Beginning balance at Aug. 04, 2019	1,507,379		$ 0	$ 615	329,915	1,404,866	(228,017)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	125,982					125,982
Foreign currency translation adjustment	9,880						9,880
Common stock issued upon exchange of exchangeable shares (in shares)		(421)	(421)	421
Common stock issued upon exchange of exchangeable shares				$ 2	(2)
Stock-based compensation expense	14,065				14,065
Common stock issued upon settlement of stock-based compensation (in shares)				50
Common stock issued upon settlement of stock-based compensation	1,516				1,516
Shares withheld related to net share settlement of stock-based compensation (in shares)				(12)
Shares withheld related to net share settlement of stock-based compensation	(2,093)				(2,093)
Repurchase of common stock (in shares)				(44)
Repurchase of common stock	(7,993)				(66)	(7,927)
Ending balance (in shares) at Nov. 03, 2019		6,960	6,960	123,336
Ending balance at Nov. 03, 2019	1,648,736		$ 0	$ 617	343,335	1,522,921	(218,137)
Beginning balance (in shares) at Feb. 02, 2020		6,227	6,227	124,122
Beginning balance at Feb. 02, 2020	1,952,218		$ 0	$ 621	355,541	1,820,637	(224,581)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	259,076					259,076
Foreign currency translation adjustment	(4,035)						(4,035)
Common stock issued upon exchange of exchangeable shares (in shares)		(1,011)	(1,011)	1,011
Common stock issued upon exchange of exchangeable shares				$ 5	(5)
Stock-based compensation expense	37,098				37,098
Common stock issued upon settlement of stock-based compensation (in shares)				515
Common stock issued upon settlement of stock-based compensation	14,142			$ 3	14,139
Shares withheld related to net share settlement of stock-based compensation (in shares)				(158)
Shares withheld related to net share settlement of stock-based compensation	$ (31,883)			$ (1)	(31,882)
Repurchase of common stock (in shares)	(400)			(369)
Repurchase of common stock	$ (63,663)			$ (2)	(539)	(63,122)
Ending balance (in shares) at Nov. 01, 2020		5,216	5,216	125,121
Ending balance at Nov. 01, 2020	2,162,953		$ 0	$ 626	374,352	2,016,591	(228,616)
Beginning balance (in shares) at Aug. 02, 2020		5,393	5,393	124,917
Beginning balance at Aug. 02, 2020	2,001,102		$ 0	$ 625	358,414	1,872,948	(230,885)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	143,643					143,643
Foreign currency translation adjustment	2,269						2,269
Common stock issued upon exchange of exchangeable shares (in shares)		(177)	(177)	177
Common stock issued upon exchange of exchangeable shares				$ 1	(1)
Stock-based compensation expense	15,186				15,186
Common stock issued upon settlement of stock-based compensation (in shares)				30
Common stock issued upon settlement of stock-based compensation	1,679			$ 1	1,678
Shares withheld related to net share settlement of stock-based compensation (in shares)				(3)
Shares withheld related to net share settlement of stock-based compensation	(926)			$ (1)	(925)
Ending balance (in shares) at Nov. 01, 2020		5,216	5,216	125,121
Ending balance at Nov. 01, 2020	$ 2,162,953		$ 0	$ 626	$ 374,352	$ 2,016,591	$ (228,616)