ACCOUNTS RECEIVABLE (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 629,609	$ 581,235
Less: allowance for doubtful accounts	(13,896)	(14,900)
Accounts receivable	615,713	566,335
Billed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	556,928	508,448
Unbilled [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 72,681	$ 72,787