Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 31, 2011	Aug. 01, 2010	Jul. 31, 2011	Aug. 01, 2010
Consolidated Statements of Operations [Abstract]
Net revenue	$ 212,323	$ 152,208	$ 399,103	$ 290,505
Cost of goods sold	90,251	71,910	167,346	135,850
Gross profit	122,072	80,298	231,757	154,655
Selling, general and administrative expenses	62,589	46,055	120,587	87,938
Income from operations	59,483	34,243	111,170	66,717
Other income (expense), net	597	2,092	1,501	2,254
Income before provision for income taxes	60,080	36,335	112,671	68,971
Provision for income taxes	21,462	14,628	40,537	27,676
Net income	38,618	21,707	72,134	41,295
Net income (loss) attributable to non-controlling interest	239	(85)	383	(85)
Net income attributable to lululemon athletica inc.	$ 38,379	$ 21,792	$ 71,751	$ 41,380
Net basic earnings per share	$ 0.27	$ 0.15	$ 0.50	$ 0.29
Net diluted earnings per share	$ 0.26	$ 0.15	$ 0.49	$ 0.29
Basic weighted-average number of shares outstanding	143,163	141,640	142,961	141,416
Diluted weighted-average number of shares outstanding	145,228	143,500	145,108	143,384