Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	3 Months Ended
	Jul. 30, 2011	Jul. 31, 2010
Operating activities:
Net income	$ 48,610	$ 53,925
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	5,417	6,409
Amortization	3,665	3,114
ESOP compensation	5,700	525
Stock-based compensation	3,180	2,669
Excess tax benefits from stock-based compensation	(388)	(875)
Bad debt expense	766	1,022
Change in assets and liabilities, net of acquired	(234)	(44,031)
Net cash provided by operating activities	66,716	22,758
Investing activities:
Additions to property and equipment, net	(10,247)	(9,130)
Acquisitions and equity investments, net		(46,682)
Net cash used in investing activities	(10,247)	(55,812)
Financing activities:
Dividends paid	(13,801)	(11,916)
Repurchases of common stock	(59,913)	0
ESOP activity	(436)	1,611
Common stock issued, net	4,247	5,502
Excess tax benefits from share-based compensation	388	875
Net cash used in financing activities	(69,515)	(3,928)
Effect of exchange rate changes on cash	(1,843)	(5,182)
Net decrease in cash and cash equivalents	(14,889)	(42,164)
Cash and cash equivalents at beginning of period	388,665	340,591
Cash and cash equivalents at end of period	$ 373,776	$ 298,427