RESTRUCTURING AND OTHER CHARGES, NET (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013 Structural Cost Improvement and Industrial Cost Reduction Initiatives [Member]	Jul. 31, 2012 Structural Cost Improvement and Industrial Cost Reduction Initiatives [Member]	Apr. 30, 2013 Structural Cost Improvement and Industrial Cost Reduction Initiatives [Member] Severance [Member]	Jul. 31, 2012 Structural Cost Improvement and Industrial Cost Reduction Initiatives [Member] Severance [Member]	Apr. 30, 2013 Structural Cost Improvement and Industrial Cost Reduction Initiatives [Member] Other Restructuring [Member]	Jul. 31, 2012 Structural Cost Improvement and Industrial Cost Reduction Initiatives [Member] Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve					$ 34,967		$ 34,364		$ 603
Original charge					12,045	65,300	10,896	61,852	1,149	3,448
Utilized					(25,986)	(30,163)	(24,672)	(27,365)	(1,314)	(2,798)
Reversal of excess restructuring reserves	292	31	633	77	(557)		(500)		(57)
Translation					245	(170)	234	(123)	11	(47)
Restructuring Reserve					$ 20,714	$ 34,967	$ 20,322	$ 34,364	$ 392	$ 603