Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Operating Activities
Net earnings	$ 104,926	$ 122,374
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	32,896	30,896
Changes in operating assets and liabilities	(26,831)	(43,485)
Tax benefit of equity plans	(8,560)	(7,576)
Stock compensation plan expense	6,218	6,440
Deferred taxes	(2,495)	(4,904)
Other, net	3,026	(1,547)
Net cash provided by operating activities	109,180	102,198
Investing Activities
Net expenditures on property, plant, and equipment	(51,753)	(36,349)
Change in short term investments	31,250	(93,455)
Net cash used in investing activities	(20,503)	(129,804)
Financing Activities
Purchase of treasury stock	(60,975)	(73,558)
Repayments of long-term debt	(887)	(45,917)
Change in short-term borrowings	(37,647)	79,369
Dividends paid	(26,495)	(22,342)
Tax benefit of equity plans	8,560	7,576
Exercise of stock options	9,152	9,791
Net cash used in financing activities	(108,292)	(45,081)
Effect of exchange rate changes on cash	10,434	(19,877)
Decrease in cash and cash equivalents	(9,181)	(92,564)
Cash and cash equivalents, beginning of year	225,789	273,494
Cash and cash equivalents, end of period	$ 216,608	$ 180,930