CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 28, 2017	Jan. 30, 2016
Income Statement [Abstract]
Net sales	$ 1,397,418	$ 1,400,853	$ 4,148,095	$ 3,932,933
Cost of sales	1,067,657	1,060,989	3,182,196	2,973,926
Gross profit	329,761	339,864	965,899	959,007
Operating expenses	283,207	244,135	774,126	717,638
Operating income from continuing operations	46,554	95,729	191,773	241,369
Other income (expense):
Other income, net	994	830	4,980	2,454
Interest expense	(11,400)	(10,634)	(31,659)	(39,931)
Income from continuing operations before taxes	36,148	85,925	165,094	203,892
Income tax expense	8,379	28,735	52,663	83,828
Net income from continuing operations	27,769	57,190	112,431	120,064
Net income (loss) from discontinued operations	(3,229)	(750)	(3,229)	1,500
Net income	$ 24,540	$ 56,440	$ 109,202	$ 121,564
Basic earnings (loss) per share:
Continuing operations (in USD per share)	$ 0.29	$ 0.60	$ 1.18	$ 1.23
Discontinued operations (in USD per share)	(0.03)	(0.01)	(0.03)	0.01
Net basic earnings per share (in USD per share)	0.26	0.59	1.15	1.24
Diluted earnings (loss) per share:
Continuing operations (in USD per share)	0.29	0.60	1.17	1.22
Discontinued operations (in USD per share)	(0.03)	(0.01)	(0.03)	0.01
Net diluted earnings per share (in USD per share)	$ 0.26	$ 0.59	$ 1.14	$ 1.23
Weighted average shares:
Basic (in shares)	94,737	95,335	95,252	97,809
Diluted (in shares)	95,359	95,930	95,915	98,488
Dividends declared per common share (in USD per share)	$ 0.24	$ 0.22	$ 0.72	$ 0.66
Comprehensive income
Net income	$ 24,540	$ 56,440	$ 109,202	$ 121,564
Foreign currency translation gain (loss)	6,082	(18,679)	(28,176)	(23,013)
Cash flow hedges, net of tax	437	442	1,307	1,496
Comprehensive income	$ 31,059	$ 38,203	$ 82,333	$ 100,047