Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Operating Activities
Net earnings	$ 61,592	$ 54,113
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	16,267	16,026
Changes in operating assets and liabilities	20,481	1,910
Tax benefit of equity plans	(3,408)	(5,527)
Stock compensation plan expense	1,936	1,476
Deferred taxes	(433)	(4,282)
Loss on sale of business	905
Other, net	1,579	347
Net cash provided by operating activities	98,919	64,063
Investing Activities
Net expenditures on property, plant, and equipment	(20,530)	(21,404)
Purchases of short-term investments	(46,718)
Proceeds from sale of short-term investments	13,316	12,868
Net cash used in investing activities	(53,932)	(8,536)
Financing Activities
Purchase of treasury stock	(12,132)	(50,731)
Repayments of long-term debt	(312)	(126)
Change in short-term borrowings	(3,829)	(28,577)
Dividends paid	(19,000)	(13,292)
Tax benefit of equity plans	3,408	5,527
Exercise of stock options	7,460	5,576
Net cash used in financing activities	(24,405)	(81,623)
Effect of exchange rate changes on cash	2,810	5,077
Increase (decrease) in cash and cash equivalents	23,392	(21,019)
Cash and cash equivalents, beginning of year	224,138	225,789
Cash and cash equivalents, end of period	$ 247,530	$ 204,770