CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Apr. 26, 2014	Apr. 27, 2013	Apr. 28, 2012
Income Statement [Abstract]
Net sales	$ 4,063,715	$ 3,637,212	$ 3,535,661
Cost of sales	2,865,437	2,446,443	2,373,147
Gross profit	1,198,278	1,190,769	1,162,514
Operating expenses	852,522	836,314	804,505
Operating income	345,756	354,455	358,009
Other income and expense:
Other income, net	2,869	3,059	2,146
Interest expense	(35,713)	(36,397)	(30,343)
Income before taxes	312,912	321,117	329,812
Income taxes	112,300	110,845	116,997
Net income	200,612	210,272	212,815
Earnings per share:
Basic	$ 1.99	$ 2.04	$ 1.93
Diluted	$ 1.97	$ 2.03	$ 1.92
Shares:
Basic	100,727	103,030	110,121
Diluted	101,643	103,807	110,846
Dividends declared per common share	$ 0.68	$ 0.58	$ 0.50
Comprehensive income
Net income	200,612	210,272	212,815
Foreign currency translation (loss) gain	6,059	(7,132)	(9,372)
Cash flow hedge	(5,854)	(158)	(123)
Comprehensive income	$ 200,817	$ 202,982	$ 203,320