ACCRUED AND OTHER NON-CURRENT LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013		Jul. 31, 2012
Payables and Accruals [Abstract]
Payroll and related taxes	$ 133,395		$ 132,024
Customer advances	47,457		47,583
Benefits	16,091		19,594
Interest payable	8,024		20,441
Environmental remediation	2,986	[1]	2,631	[1]
Deferred income taxes	1,718	[2]	1,052	[2]
Other	103,158		157,141
Accrued liabilities	$ 312,829		$ 380,466

[1] For further discussion regarding environmental remediation liabilities refer to Note 14, Contingencies and Commitments.

[2] See Note 11, Income Taxes, for further discussion.