RESTRUCTURING AND OTHER CHARGES, NET (Details) (USD $) In Thousands	12 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2009
Severance	$ 12,382	$ 6,637	$ 18,938
Professional fees and other costs, net of receipt of insurance claim payments	7,800	4,890	4,747
Environmental matters	6,349	6,911	1,808
In-process research and development			1,743
Asset impairment/(gain on sale)	7,336	(537)	3,651
Reversal of excess restructuring reserves	(26)	(237)	(164)
Restructuring and other charges, net	33,841	17,664	30,723
Cash	23,570	16,085	26,406
Non-cash	10,271	1,579	4,317
Restructuring, Settlement and Impairment Provisions	33,841	17,664	30,723
Restructuring Charges [Member]
Severance	4,863	6,637	18,938
Professional fees and other costs, net of receipt of insurance claim payments	5,507	5,581	4,734
Environmental matters	0	0	0
Asset impairment/(gain on sale)	7,336	237	174
Reversal of excess restructuring reserves	(26)	(237)
Restructuring and other charges, net	17,680	12,218	23,682
Cash	10,344	10,639	24,585
Non-cash	7,336	1,579	(903)
Restructuring, Settlement and Impairment Provisions	17,680	12,218	23,682
Other Charges/ Gains [Member]
Severance	7,519	0	0
Professional fees and other costs, net of receipt of insurance claim payments	2,293	(691)	13
Environmental matters	6,349	6,911	1,808
In-process research and development			1,743
Asset impairment/(gain on sale)	0	(774)	3,477
Reversal of excess restructuring reserves	0	0
Restructuring and other charges, net	16,161	5,446	7,041
Cash	13,226	5,446	1,821
Non-cash	2,935	0	5,220
Restructuring, Settlement and Impairment Provisions	$ 16,161	$ 5,446	$ 7,041