CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Oct. 26, 2013	Oct. 27, 2012
Income Statement [Abstract]
Net sales	$ 998,834	$ 867,193	$ 1,878,959	$ 1,756,418
Cost of sales	709,403	586,594	1,308,010	1,190,119
Gross profit	289,431	280,599	570,949	566,299
Operating expenses	214,208	202,730	414,445	405,838
Operating income	75,223	77,869	156,504	160,461
Other income and expense:
Other income, net	1,245	675	688	1,352
Interest expense	(8,777)	(9,127)	(17,344)	(18,695)
Income before taxes	67,691	69,417	139,848	143,118
Income taxes	25,663	23,875	51,928	50,038
Net income	42,028	45,542	87,920	93,080
Earnings per share:
Basic	$ 0.42	$ 0.44	$ 0.87	$ 0.89
Diluted	$ 0.41	$ 0.44	$ 0.86	$ 0.89
Weighted average common shares:
Basic	101,069	103,706	101,048	104,371
Diluted	101,968	104,415	101,944	105,099
Dividends declared per common share	$ 0.16	$ 0.14	$ 0.32	$ 0.28
Other Comprehensive Income
Net income	42,028	45,542	87,920	93,080
Foreign currency translation loss	14,699	8,519	6,394	(2,764)
Cash flow hedge loss	(48)	(31)	(97)	(62)
Comprehensive Income	$ 56,679	$ 54,030	$ 94,217	$ 90,254