ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2014		Oct. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	$ 118,033		$ 92,388
Realized investment gain/(losses)	(202,656)		(194,884)
Tax (expense)/benefit	(29,760)		(20,875)
Net of tax	88,273		71,513
Foreign exchange forward contracts	696,492		629,779
Foreign exchange forward contracts	(335,084)		(304,065)
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior service cost	(366)	[1]	(384)
Recognized actuarial gain/(loss)	(2,393)	[1]	(2,730)
Total before tax	(2,759)		(3,114)
Tax (expense)/benefit	867		965
Net of tax	(1,892)		(2,149)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized investment gain/(losses)	17		(57)
Tax (expense)/benefit	(6)		20
Net of tax	11		(37)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	1,651		(821)
Tax (expense)/benefit	(147)		14
Net of tax	1,504		(807)
Foreign Exchange Contract [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Foreign exchange forward contracts	560		(1)
Foreign exchange forward contracts	$ 1,091		$ (820)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 8, Components of Net Periodic Pension Cost, for additional details).