Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	May 05, 2013	Apr. 29, 2012
Income Statement [Abstract]
Merchandise sales	$ 1,509,372	$ 1,439,559
Services sales	191,577	181,014
Other revenue	9,647	9,320
Net sales	1,710,596	1,629,893
Cost of Merchandise Sales, Buying and Occupancy Costs	1,037,114	994,508
Cost of services sales	134,089	128,691
Cost of other revenue	9,647	9,320
Total cost of sales	1,180,850	1,132,519
Gross profit	529,746	497,374
Operating, general and administrative expenses	362,228	343,023
Operating income	167,518	154,351
Interest expense, net	(13,168)	(14,129)
Income before income tax expense and equity in income from Banfield	154,350	140,222
Income tax expense	(55,547)	(48,172)
Equity in income from Banfield	3,612	2,633
Net income	102,415	94,683
Other comprehensive income, net of income tax:
Foreign currency translation adjustments	(987)	1,219
Other	(9)	(3)
Comprehensive income	$ 101,419	$ 95,899
Earnings per common share:
Basic (usd per share)	$ 0.99	$ 0.87
Diluted (usd per share)	$ 0.98	$ 0.85
Weighted average shares outstanding:
Basic (shares)	103,305	108,930
Diluted (shares)	104,583	111,030