Revenue - Deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Summary of changes in deferred revenue
Balance at beginning of period	$ 206,653	$ 173,921	$ 230,011	$ 193,585
Additions to contract liabilities	50,448	64,863	92,672	135,167
Deductions to contract liabilities	(49,355)	(66,831)	(114,937)	(156,799)
Balance at end of period	207,746	171,953	207,746	171,953
Other amounts included in deferred revenue	$ 8,799	$ 10,401	$ 8,799	$ 10,401