Earnings Per Share - Computation of Basic and Diluted Earning Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 02, 2014	Nov. 03, 2013	Aug. 04, 2013	May 05, 2013	Feb. 03, 2013	Oct. 28, 2012	Jul. 29, 2012	Apr. 29, 2012	Feb. 02, 2014	Feb. 03, 2013	Jan. 29, 2012
Earnings Per Share [Abstract]
Net income attributable to lululemon athletica inc	$ 109,692	$ 66,111	$ 56,465	$ 47,279	$ 109,375	$ 57,316	$ 57,222	$ 46,643	$ 279,547	$ 270,556	$ 184,063
Basic weighted-average number of shares outstanding									144,913	144,000	143,196
Effect of stock options assumed exercised (in shares)									1,130	1,806	2,082
Diluted weighted-average number of shares outstanding									146,043	145,806	145,278
Basic earnings per share (in dollars per share)	$ 0.75	$ 0.46	$ 0.39	$ 0.33	$ 0.76	$ 0.40	$ 0.40	$ 0.32	$ 1.93	$ 1.88	$ 1.29
Diluted earnings per share (in dollars per share)	$ 0.75	$ 0.45	$ 0.39	$ 0.32	$ 0.75	$ 0.39	$ 0.39	$ 0.32	$ 1.91	$ 1.85	$ 1.27
Antidilutive securities excluded (in shares)									57	45	50