CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 29, 2017	Apr. 30, 2016	Apr. 25, 2015
Income Statement [Abstract]
Net sales	$ 5,593,127	$ 5,386,703	$ 3,910,865
Cost of sales	4,291,730	4,063,955	2,850,316
Gross profit	1,301,397	1,322,748	1,060,549
Operating expenses	1,013,469	975,035	755,963
Operating income from continuing operations	287,928	347,713	304,586
Other income (expense):
Other income, net	6,013	4,045	3,425
Interest expense	(43,060)	(50,065)	(33,693)
Income from continuing operations before taxes	250,881	301,693	274,318
Income tax expense	77,093	116,009	94,235
Net income from continuing operations	173,788	185,684	180,083
Net income (loss) from discontinued operations	(2,895)	1,500	43,178
Net income	$ 170,893	$ 187,184	$ 223,261
Basic earnings (loss) per share:
Continuing operations (in usd per share)	$ 1.83	$ 1.91	$ 1.82
Discontinued operations (in usd per share)	(0.03)	0.02	0.44
Basic (in usd per share)	1.80	1.93	2.26
Diluted earnings (loss) per share:
Continuing operations (in usd per share)	1.82	1.90	1.81
Discontinued operations (in usd per share)	(0.03)	0.01	0.43
Diluted (in usd per share)	$ 1.79	$ 1.91	$ 2.24
Weighted average shares:
Basic (in shares)	94,897	97,222	98,989
Diluted (in shares)	95,567	97,902	99,694
Dividends declared per common share (in usd per share)	$ 0.98	$ 0.9	$ 0.82
Comprehensive income
Net income	$ 170,893	$ 187,184	$ 223,261
Foreign currency translation loss	(26,450)	(9,552)	(73,271)
Cash flow hedges, net of tax	1,745	1,934	(12,445)
Comprehensive income	$ 146,188	$ 179,566	$ 137,545