Segment Reporting (Geographic Sales By Origination And Property, Plant And Equipment) (Details) (USD $) In Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2010	Jul. 31, 2010	Apr. 30, 2010	Jan. 31, 2010	Oct. 31, 2009	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2009
Net Sales	$ 625,450	$ 594,565	$ 537,105	$ 536,909	$ 515,243	$ 497,619	$ 436,122	$ 428,080	$ 2,294,029	$ 1,877,064	$ 1,868,629
Property, Plant & Equipment - Net	391,502				365,892				391,502	365,892	381,068
United States [Member]
Net Sales									941,218	745,400	778,979
Property, Plant & Equipment - Net	141,584				139,717				141,584	139,717	141,052
Europe [Member]
Net Sales									653,275	545,803	567,117
Property, Plant & Equipment - Net	131,739				122,646				131,739	122,646	138,350
Asia - Pacific [Member]
Net Sales									540,874	460,470	419,423
Property, Plant & Equipment - Net	81,035				72,950				81,035	72,950	71,686
Other [Member]
Net Sales									158,662	125,391	103,110
Property, Plant & Equipment - Net	$ 37,144				$ 30,579				$ 37,144	$ 30,579	$ 29,980