CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 01, 2014	Jan. 26, 2013	Feb. 01, 2014	Jan. 26, 2013
Income Statement [Abstract]
Net sales	$ 1,646,041	$ 1,445,703	$ 3,248,052	$ 2,855,740
Cost of sales	1,377,874	1,204,030	2,708,709	2,378,114
Gross profit	268,167	241,673	539,343	477,626
Operating expenses	219,322	202,693	442,472	400,451
Restructuring and asset impairment expenses	0	0	0	1,629
Total operating expenses	219,322	202,693	442,472	402,080
Operating income	48,845	38,980	96,871	75,546
Other expense (income):
Interest expense	1,782	1,373	3,636	2,351
Interest income	(125)	(168)	(245)	(341)
Other, net	602	201	621	4,982
Total other expense, net	2,259	1,406	4,012	6,992
Income before income taxes	46,586	37,574	92,859	68,554
Provision for income taxes	18,635	14,954	37,144	24,398
Net income	$ 27,951	$ 22,620	$ 55,715	$ 44,156
Basic per share data:
Net income (usd per share)	$ 0.56	$ 0.46	$ 1.13	$ 0.90
Weighted average basic shares of common stock outstanding	49,615	49,289	49,490	49,174
Diluted per share data:
Net income (usd per share)	$ 0.56	$ 0.46	$ 1.12	$ 0.89
Weighted average diluted shares of common stock outstanding	49,873	49,528	49,766	49,475