CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 30, 2016	Jan. 24, 2015	Jan. 30, 2016	Jan. 24, 2015
Income Statement [Abstract]
Net sales	$ 1,400,853	$ 958,628	$ 3,932,933	$ 2,875,804
Cost of sales	1,060,989	696,186	2,973,926	2,103,458
Gross profit	339,864	262,442	959,007	772,346
Operating expenses	244,135	185,065	717,638	556,833
Operating income from continuing operations	95,729	77,377	241,369	215,513
Other income (expense):
Other income, net	830	541	2,454	2,688
Interest expense	(10,634)	(8,512)	(39,931)	(25,824)
Income from continuing operations before taxes	85,925	69,406	203,892	192,377
Income tax expense	28,735	22,972	83,828	65,753
Net income from continuing operations	57,190	46,434	120,064	126,624
Net income (loss) from discontinued operations	(750)	8,242	1,500	32,119
Net income	$ 56,440	$ 54,676	$ 121,564	$ 158,743
Basic earnings (loss) per share:
Continuing operations (in USD per share)	$ 0.60	$ 0.47	$ 1.23	$ 1.28
Discontinued operations (in USD per share)	(0.01)	0.08	0.01	0.32
Net basic earnings per share (in USD per share)	0.59	0.55	1.24	1.60
Diluted earnings (loss) per share:
Continuing operations (in USD per share)	0.60	0.47	1.22	1.27
Discontinued operations (in USD per share)	(0.01)	0.08	0.01	0.32
Net diluted earnings per share (in USD per share)	$ 0.59	$ 0.55	$ 1.23	$ 1.59
Weighted average shares:
Basic (in shares)	95,335	98,842	97,809	98,991
Diluted (in shares)	95,930	99,540	98,488	99,699
Dividends declared per common share (in USD per share)	$ 0.22	$ 0.20	$ 0.66	$ 0.60
Comprehensive income
Net income	$ 56,440	$ 54,676	$ 121,564	$ 158,743
Foreign currency translation gain (loss)	(18,679)	(44,781)	(23,013)	(71,287)
Cash flow hedges, net of tax	442	(8,143)	1,496	(14,319)
Comprehensive income	$ 38,203	$ 1,752	$ 100,047	$ 73,137