Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Jul. 31, 2012
Assets
Cash and cash equivalents	$ 263,988	$ 225,789
Short-term investments	65,700	92,362
Accounts receivable, less allowance of $7,128 and $6,418	437,414	438,796
Inventories	240,476	256,116
Prepaids and other current assets	65,752	72,599
Total current assets	1,073,330	1,085,662
Property, plant, and equipment, at cost	1,020,391	949,619
Less accumulated depreciation	(607,570)	(564,710)
Property, plant and equipment, net	412,822	384,909
Goodwill	165,511	162,949
Intangible assets, net	42,596	46,200
Other assets	63,349	50,362
Total assets	1,757,608	1,730,082
Liabilities and shareholders' equity
Short-term borrowings	30,000	95,147
Current maturities of long-term debt	82,002	2,346
Trade accounts payable	178,028	199,182
Other current liabilities	167,802	201,848
Total current liabilities	457,832	498,523
Long-term debt	119,079	203,483
Deferred income taxes	5,326	4,611
Other long-term liabilities	93,838	113,451
Total liabilities	676,075	820,068
Shareholders' equity
Preferred stock, $1.00 par value, 1,000,000 shares authorized, none issued
Common stock, $5.00 par value, 240,000,000 shares authorized, 151,643,194 shares issued	758,216	758,216
Retained earnings	499,808	366,788
Stock compensation plans	21,401	24,948
Accumulated other comprehensive loss	(40,926)	(101,888)
Treasury stock at cost, 4,585,928 and 3,980,832 shares at April 30, 2013 and July 31, 2012, respectively	(156,967)	(138,050)
Total shareholders' equity	1,081,533	910,014
Total liabilities and shareholders' equity	$ 1,757,608	$ 1,730,082