ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at July 31, 2014	$ (14,921)	$ (40,792)
Other comprehensive income/(loss) before reclassifications	(197,931)	25,656
Amounts reclassified from accumulated other comprehensive income (loss)	707	5,170
Foreign exchange adjustments and other	9,741	(4,995)
Balance at October 31, 2014	(202,404)	(14,961)
Foreign Currency Translation [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at July 31, 2014	98,689	84,598
Other comprehensive income/(loss) before reclassifications	(201,212)	21,289
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Balance at October 31, 2014	(102,523)	105,887
Defined Benefit Pension Plan [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at July 31, 2014	(121,280)	(125,211)
Other comprehensive income/(loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	3,822	4,330
Foreign exchange adjustments and other	9,741	(4,995)
Balance at October 31, 2014	(107,717)	(125,876)
Unrealized investment gains/(losses) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at July 31, 2014	2,880	2,123
Other comprehensive income/(loss) before reclassifications	(259)	(450)
Amounts reclassified from accumulated other comprehensive income (loss)	(312)	76
Balance at October 31, 2014	2,309	1,749
Unrealized gains/(losses) on derivatives [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at July 31, 2014	4,790	(2,302)
Other comprehensive income/(loss) before reclassifications	3,540	4,817
Amounts reclassified from accumulated other comprehensive income (loss)	(2,803)	764
Balance at October 31, 2014	$ 5,527	$ 3,279