CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Jan. 31, 2015	Feb. 01, 2014
Income Statement [Abstract]
Net sales	$ 2,016,546	$ 1,646,041	$ 4,009,022	$ 3,248,052
Cost of sales	1,717,347	1,377,874	3,390,827	2,708,709
Gross profit	299,199	268,167	618,195	539,343
Operating expenses	249,448	219,322	509,496	442,472
Restructuring and asset impairment expenses	248	0	803	0
Total operating expenses	249,696	219,322	510,299	442,472
Operating income	49,503	48,845	107,896	96,871
Other expense (income):
Interest expense	3,554	1,782	6,809	3,636
Interest income	(69)	(125)	(162)	(245)
Other, net	(5)	602	611	621
Total other expense, net	3,480	2,259	7,258	4,012
Income before income taxes	46,023	46,586	100,638	92,859
Provision for income taxes	18,179	18,635	39,752	37,144
Net income	$ 27,844	$ 27,951	$ 60,886	$ 55,715
Basic per share data:
Net income (usd per share)	$ 0.56	$ 0.56	$ 1.22	$ 1.13
Weighted average basic shares of common stock outstanding	50,025	49,615	49,957	49,490
Diluted per share data:
Net income (usd per share)	$ 0.55	$ 0.56	$ 1.21	$ 1.12
Weighted average diluted shares of common stock outstanding	50,277	49,873	50,195	49,766